Free Gravitation MCQs with Answers

• A. Heavier in the beginning and lighter afterwards
• B. Lighter
• C. Shows no change in weight
• D. Heavier afterwards

Explanation: The Explanation for this question will be added soon!

• A. Terminal velocity
• B. Angular velocity
• C. Drift velocity
• D. Escape velocity

Explanation: Escape velocity is the minimum velocity required to go out from Earth's gravitational pull. Hence D is correct.

• A. Axis of rotation
• B. Line joining the interacting bodies
• C. Line perpendicular to the interacting bodies
• D. None of these

Explanation: The force of attraction is always along the line joining the interacting bodies, be it imaginary or real. Hence C is correct .

• A. Limited to 1 x 10^-10 m
• B. Limited to 1 x 10^-2 m
• C. Extremely long
• D. about 1 x 10^5 m

Explanation: F =GMm/ r 2 , So this shows that F can be 0 only when the distance is infinite, proving that Gravitational forces have an extremely long…

• A. Every body in the universe attracts every other body
• B. The force of attraction is directly proportional to the product of their masses
• C. The force of attraction is inversely proportional to the square of their distance
• D. All of the above

Explanation: The correct option is D. F is always given by - GMm/r 2 . - sign shows that gravitational force is an attractive force.

• A. m/6
• B. 6m
• C. m
• D. m/3

Explanation: The correct option is C . Mass is always independent of gravitational acceleration and is constant.

• A. 5 g
• B. g/5
• C. g/20
• D. g/25

Explanation: Gravitational acceleration (g) on a planet depends on GM/ r2 As the radius of the planet is five times that of Earth, its g' = GM/ 25r2…

• A. f/2
• B. f/4
• C. 4f
• D. 2f

Explanation: The gravitational force between two masses is given by Newton's law of gravitation, f= GMm/ r 2 Initially, the distance was 10cm so f=…

• A. Three times
• B. Nine times
• C. One-ninth times
• D. One-third times

Explanation: The correct option is: C) One-ninth times The gravitational force (f) is given by GMm/r 2 .

• A. Remain unchanged
• B. Becomes four times larger
• C. Be doubled
• D. Become sixteen times larger

Explanation: Gravitational acceleration= GM/R2 As the mass increases four times so g'= 4gHence the correct option is B.

• A. Distance between the poles and center of the earth is less as compared to that between the equator & center.
• B. Distance between the poles and the center of the earth is more as compared to that between the equator and center.
• C. The mass of the earth on the poles is greater as compared to that on the equator.
• D. The mass of the earth on the poles is less as compared to that on the equator.

Explanation: The correct option is: A) Distance between the poles and the center of the Earth is less as compared to that between the equator and…

• A. zero
• B. mg
• C. 3 mg
• D. 5 mg

Explanation: The correct option is: D) 5 mg The apparent weight of an object is the force exerted by a supporting surface (such as a floor or a scale)…

• A. Have maximum weight
• B. Have minimum weight
• C. Have no weight
• D. Have any weight

Explanation: The correct option is: C) Have no weight When a body is in free fall, it accelerates under the influence of gravity, and during this…

• A. Falls down
• B. Remains stationary
• C. Goes up
• D. None of the above

Explanation: The correct option is B) Remain stationary When the lift falls freely under gravity (in free fall), everything inside the lift, including…

• A. Zero
• B. Half of the gravitational pull of the planet
• C. Equal to the gravitational pull of the planet
• D. Proportional to the diameter of the orbit

Explanation: A is the correct answer. In a circular orbit, the gravitational force is acting perpendicular to the direction of motion of the satellite.

• A. It is essentially a freely falling body
• B. It is far away from the earth to experience the pull of the earth
• C. The moon attracts the body with a force equal to its weight
• D. None of the above

Explanation: A is the correct explanation. A body in orbit is essentially in free fall towards the Earth.

• A. Revolving it around the earth
• B. Spinning it around its own axis
• C. Increasing its velocity
• D. Decreasing its velocity

Explanation: B is a correct option. Centrifugal force due to rotation can simulate the effects of gravity.

• A. His mass becomes zero but weight remains constant
• B. His mass remains constant but weight becomes zero
• C. Both mass and weight remain constant
• D. Both mass and weight become zero

Explanation: B is more accurate. The person's mass remains constant because it is an intrinsic property, but their weight is effectively zero or…

• A. In the direction towards the earth
• B. In the direction towards the moon
• C. On the right side of space ship
• D. On the left side of space ship

Explanation: A is the correct answer. Firing the rocket in the direction towards the Earth, opposite to the motion of the spacecraft, will result in a…

• A. 8 m/s2
• B. 4 m/s2
• C. 9.8 m/s2
• D. None of above

Explanation: The following is the solution: Law of Universal Gravitation states that the force of attraction FG between two bodies of masses M1 and M2…