- AWhy objects float.
- BWhy objects fall.
- CWhy objects spin.
- DWhy objects reflect light.
More Questions on Gravitation
A person standing on a weighing machine inside an elevator that is accelerating upwards will feel:
→ 2The concept of 'g' being approximately 9.8 m/s² is valid:
→ 3A body is said to be in free fall if:
→ 4Which statement is correct about the variation of 'g'?
→ 5The period of a satellite orbiting Earth depends on its orbital radius. This is an application of:
→ 6The principle of universal gravitation implies that gravity acts between:
→ 7If the Earth suddenly became 10 times more massive, without changing its radius, your weight would:
→ 8The force of attraction between any two objects in the universe is called:
→ 9What is the relationship between gravitational force and the square of the distance between two objects?
→ 10When an object falls towards the Earth, the Earth also moves towards the object, but the Earth's acceleration is much smaller because:
→ 11The buoyant force acts:
→ 12The trajectory of a stone thrown horizontally from a cliff is an example of motion under:
→ 13The energy possessed by an object due to its position or state is called:
→ 14The gravitational force is negligible between everyday objects because:
→ 15Why do some objects float and some sink in water?
→ 16The force of gravity on a freely falling body is:
→ 17The value of g at the surface of a planet depends on the planet's:
→ 18The gravitational force between two point masses m1 and m2 is F. If the distance between them is d, and then d is doubled, the force becomes F'. What is the ratio F/F'?
→ 19If an object is dropped from a height, its potential energy converts into:
→ 20The concept of gravity helps in understanding the formation of:
→ 21A person weighs 600 N on Earth. What will be their mass on Earth? (g = 10 m/s² for simplicity)
→ 22Which of the following statements about 'g' (acceleration due to gravity) is correct?
→ 23The gravitational force on an object does not depend on its:
→ 24The speed of a freely falling object after time 't' (starting from rest) is given by:
→ 25Two masses are placed 1 m apart. If their masses are 1 kg each, the gravitational force between them is numerically equal to:
→ 26What happens to the value of 'g' inside a hollow sphere?
→ 27The weight of a body is highest at the:
→ 28Why are satellites able to stay in orbit without falling down to Earth?
→ 29An object of mass 'm' is dropped from a height 'h'. Its potential energy at height 'h' is 'P'. Its kinetic energy just before hitting the ground is:
→ 30If the mass of the Earth were to increase by 10%, how would the value of 'g' on its surface change?
→ 31The gravitational force between the Sun and the Earth provides the necessary:
→ 32A body is dropped from a tower of height h. If the time taken is t, then the height is:
→ 33The SI unit of gravitational potential energy is:
→ 34The gravitational force is dependent on:
→ 35What happens to the value of 'g' at a height equal to the Earth's radius (R) above the surface?
→ 36At which of the following locations would an object have the least weight?
→ 37The acceleration of a body thrown vertically upwards is:
→ 38What happens to the gravitational force between two objects if the mass of both objects is halved?
→ 39If a body is floating in a fluid, the buoyant force on it is:
→ 40The concept of a 'field' in gravitation helps to explain:
→ 41Which of the following would cause an increase in the gravitational force between two objects?
→ 42The motion of planets around the Sun is governed by:
→ 43A falling object continuously gains speed. This is due to:
→ 44If the radius of the Earth becomes double while its mass remains the same, then the weight of an object on its surface would become:
→ 45The phenomenon of tides is primarily due to the gravitational pull of the:
→ 46The gravitational field strength at a point is numerically equal to:
→ 47A body is projected vertically upwards with an initial velocity u. The maximum height (h) reached by the body is given by:
→ 48What is the weight of a person of mass 70 kg on Earth? (g = 9.8 m/s²)
→ 49If the Earth's gravity suddenly disappeared, what would happen to the objects on its surface?
→ 50The force that keeps you from floating off the Earth is:
→ 51The escape velocity is the minimum speed an object needs to break free from the gravitational attraction of a massive body without further propulsion. For Earth, it is approximately:
→ 52What happens to the acceleration due to gravity 'g' at the equator if the Earth suddenly shrinks to half its radius without changing its mass?
→ 53The gravitational force between two bodies is always:
→ 54Why does a stone fall faster than a feather in the presence of air?
→ 55The center of gravity of an object is the point where:
→ 56What is the relationship between gravitational force F, masses m1 and m2, and distance r?
→ 57When a body is dropped from a height, its velocity increases due to:
→ 58A person experiences weightlessness in a spacecraft when it is:
→ 59The weight of an object is 49 N. What is its mass? (Assume g = 9.8 m/s²)
→ 60Which of the following is NOT true about the acceleration due to gravity (g)?
→ 61The concept of gravitation explains why:
→ 62If the gravitational force between two objects is F, and the masses of both objects are doubled, the new force will be:
→ 63What is the acceleration of a body projected upwards when it reaches half of its maximum height?
→ 64Which of the following is an example of free fall?
→ 65The constant 'G' is called universal because:
→ 66The atmosphere of Earth is held by:
→ 67If two planets have the same mass but different radii, the planet with the larger radius will have:
→ 68When a body is projected vertically upwards, its speed at the highest point is:
→ 69The formula for gravitational potential energy (PE) for an object of mass m at height h near Earth's surface is:
→ 70The gravitational potential energy of an object at a certain height above the ground is:
→ 71Which of the following is true about the gravitational force between two apples kept on a table?
→ 72The ratio of the acceleration due to gravity on the surface of the Earth to that on the surface of the Moon is approximately:
→ 73The acceleration due to gravity 'g' is:
→ 74If the Earth stops rotating, the value of g at the equator will:
→ 75The force of attraction between two bodies does not depend on:
→ 76When you jump up, the Earth also moves towards you, but you don't observe it. This is because:
→ 77A stone is dropped from a height h. The time it takes to reach the ground is t. If it is dropped from a height 4h, the time taken will be:
→ 78The gravitational force between two masses m1 and m2 separated by a distance r is F. If the distance is increased to 2r, the new force will be:
→ 79A satellite orbiting the Earth continuously falls towards the Earth but does not hit it because:
→ 80Which statement is true about weight?
→ 81Which statement is true about mass?
→ 82What is the weight of a 10 kg object on Earth? (Assume g = 9.8 m/s²)
→ 83The factor 'G' in the universal law of gravitation is called:
→ 84If an object is thrown vertically upwards, its acceleration at the highest point of its trajectory is:
→ 85Who stated that all objects fall at the same rate in a vacuum, regardless of their mass?
→ 86What happens to the acceleration due to gravity (g) when you go deeper into the Earth?
→ 87The acceleration of a freely falling object near the Earth's surface is approximately:
→ 88The gravitational force between two objects is independent of the:
→ 89Why do astronauts experience weightlessness in orbit?
→ 90The term "weightlessness" does NOT mean:
→ 91The unit of gravitational force is:
→ 92The path of a projectile under the influence of gravity alone is generally a:
→ 93An object released from rest falls freely towards the Earth. What is its initial velocity?
→ 94If the radius of the Earth were to suddenly halve, but its mass remained the same, the acceleration due to gravity on its surface would:
→ 95If the mass of the Earth were to suddenly double, but its radius remained the same, the acceleration due to gravity on its surface would:
→ 96An apple falls from a tree due to:
→ 97The equation for calculating weight is:
→ 98The acceleration due to gravity 'g' for a body falling towards Earth:
→ 99Which of the following is true for the gravitational constant (G)?
→ 100What would happen to the gravitational force between two objects if the distance between them were halved?
→ 101The force of attraction between the Earth and an object on its surface is known as:
→ 102When an object is taken to a great height above the Earth's surface, its weight:
→ 103The value of 'g' on the Moon is approximately:
→ 104If a feather and a stone are dropped from the same height in the absence of air resistance, which will reach the ground first?
→ 105Weightlessness is experienced when:
→ 106An object weighs 60 N on Earth. What will be its weight on the Moon, where g is approximately 1/6th of Earth's g?
→ 107An object has a mass of 60 kg on Earth. What will be its mass on the Moon?
→ 108The SI unit of weight is:
→ 109Weight is the force with which an object is attracted towards:
→ 110Mass of an object:
→ 111The SI unit of mass is:
→ 112Mass is a measure of an object's:
→ 113The force responsible for keeping the Moon in orbit around the Earth is:
→ 114If two objects of different masses are dropped simultaneously from the same height in a vacuum, they will:
→ 115Free fall occurs when an object falls under the influence of:
→ 116When an object is in free fall, its acceleration is:
→ 117At the center of the Earth, the value of acceleration due to gravity (g) is:
→ 118The acceleration due to gravity (g) is maximum at the Earth's:
→ 119The acceleration due to gravity (g) at a certain height above the Earth's surface:
→ 120The SI unit of acceleration due to gravity (g) is:
→ 121The value of acceleration due to gravity (g) on the Earth's surface is approximately:
→ 122The acceleration due to gravity (g) is given by the formula:
→ 123What causes the tides in the oceans?
→ 124Which of the following forces is the weakest fundamental force in nature?
→ 125Gravitational force is always:
→ 126The gravitational force is a:
→ 127If the mass of one of the two objects is doubled, the gravitational force between them will:
→ 128If the distance between two objects is doubled, the gravitational force between them will:
→ 129The value of the universal gravitational constant (G) is approximately:
→ 130The SI unit of the universal gravitational constant (G) is:
→ 131The gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the:
→ 132The universal law of gravitation was proposed by:
→ 133The volume of a 500 g sealed packet is 350 cm³. Will the packet float or sink in water if the density of water is 1 g/cm³? What will be the mass of the water displaced by this packet?
→ 134The volume of 50 g of a substance is 20 cm³. If the density of water is 1 g/cm³, will the substance float or sink?
→ 135Why does a block of plastic released under water come up to the surface of water?
→ 136In what direction does the buoyant force on an object immersed in a liquid act?
→ 137A ball thrown up vertically returns to the thrower after 6 s. Find (a) the velocity with which it was thrown up, (b) the maximum height it reaches, and (c) its position after 4 s.
→ 138A stone is allowed to fall from the top of a tower 100 m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25 m/s. Calculate when and where the two stones will meet.
→ 139Calculate the force of gravitation between the Earth and the Sun, given that the mass of the Earth = 6 × 10²⁴ kg and of the Sun = 2 × 10³⁰ kg. The average distance between the two is 1.5 × 10¹¹ m.
→ 140A stone is thrown vertically upward with an initial velocity of 40 m/s. Taking g = 10 m/s², find the maximum height reached by the stone. What is the net displacement and the total distance covered by the stone?
→ 141A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground.
→ 142Gravitational force on the surface of the Moon is only 1/6 as strong as gravitational force on the Earth. What is the weight in newtons of a 10 kg object on the Moon and on the Earth?
→ 143Why will a sheet of paper fall slower than one that is crumpled into a ball?
→ 144Amit buys few grams of gold at the poles as per the instruction of one of his friends. He hands over the same when he meets him at the equator. Will the friend agree with the weight of gold bought? If not, why?
→ 145What do we call the gravitational force between the earth and an object?
→ 146What is the acceleration of free fall?
→ 147What is the importance of universal law of gravitation?
→ 148If the Moon attracts the Earth, why does the Earth not move towards the Moon?
→ 149The Earth and the Moon are attracted to each other by gravitational force. Does the Earth attract the Moon with a force that is greater or smaller or the same as the force with which the Moon attracts the Earth? Why?
→ 150What is the magnitude of the gravitational force between the Earth and a 1 kg object on its surface? (Mass of Earth = 6 × 10²⁴ kg, Radius of Earth = 6.4 × 10⁶ m)
→ 151Gravitational force acts on all objects in proportion to their masses. Why then, a heavy object does not fall faster than a light object?
→ 152How does the force of gravitation between two objects change when the distance between them is reduced to half?
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