EASY
Earn 100

How does value of 'g' depend on mass of the object?

Important Questions on Gravitation

EASY
Science>Physics>Gravitation>Free Fall
A simple pendulum has a time period T1 when on the earth's surface and T2 when taken to a height R above earth's surface, where R is the radius of the earth.
The value of ratio T2T1 will be :
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Science>Physics>Gravitation>Free Fall
The ratio of gravitational acceleration on the surface of Earth and Moon is
MEDIUM
Science>Physics>Gravitation>Free Fall
A body is dropped from rest. Its velocity varies with displacement covered as: 
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Science>Physics>Gravitation>Free Fall
The value of acceleration due to gravity is:
MEDIUM
Science>Physics>Gravitation>Free Fall
Identical packets are dropped from two aeroplanes one above the equator and the other above the north pole both at height h. Now ge and gp are respectively the acceleration due to gravity at these places. Assuming all conditions to be similar, if t1 and t2 are respectively the time taken by packets to reach the surface of earth. Then,
EASY
Science>Physics>Gravitation>Free Fall
The value of acceleration due to gravity g on the Earth will be maximum at :
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Science>Physics>Gravitation>Free Fall
Two boys drop a sheet of paper from the top of a tower. One boy dropped his sheet of paper as such while the other boy dropped it by hanging it in the form of a ball. Which sheet of paper will reach the ground first and why? Assume that air resistance is not negligible.
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Science>Physics>Gravitation>Free Fall
Why will a sheet of paper fall slower than one that is crumpled into a ball? 
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Science>Physics>Gravitation>Free Fall

What is the acceleration of a pebble thrown vertically upwards when

(a) the pebble is moving upwards

(b) the pebble is at the maximum height

(c) the pebble is falling down?

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Science>Physics>Gravitation>Free Fall
A body is thrown upwards. What is the direction of g when the body is falling down?
 
MEDIUM
Science>Physics>Gravitation>Free Fall
Why is the value of 'g' variable on the surface of earth?
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Science>Physics>Gravitation>Free Fall
A planet will have large value of g which has large value of mass and small value of radius.
MEDIUM
Science>Physics>Gravitation>Free Fall
Gravitational force acts on all objects in proportion to their masses. Why then, a heavy object does not fall faster than a light object?
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Science>Physics>Gravitation>Free Fall
An object takes 5 s to reach the ground from a height of 5 m on a planet. What is the value of g on the planet?
MEDIUM
Science>Physics>Gravitation>Free Fall

A ball thrown up vertically returns to the thrower after 6 s. (Use g = 10 m/s2)Find
(a) the velocity with which it was thrown up,
(b) the maximum height it reaches, and
(c) its position after 4 s.

EASY
Science>Physics>Gravitation>Free Fall
Suppose a planet whose mass and radius both are half of those of earth. Calculate the acceleration due to gravity on the surface of the planet.'g' on the surface of the earth=9.8 m s-2.
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Science>Physics>Gravitation>Free Fall
If the density of two planets is the same, but their radii are in the ratio of 1:2, prove that the ratio of accelerations due to gravity on their surfaces is also 1:2.
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Science>Physics>Gravitation>Free Fall
What are (i) free fall, (ii) acceleration due to gravity (iii) escape velocity (iv) centripetal force?
HARD
Science>Physics>Gravitation>Free Fall
A 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. (Use  g = 10 m/s2)
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Science>Physics>Gravitation>Free Fall
A stone thrown vertically upwards with initial velocity u reaches a height ‘h’ before coming down. Show that the time taken to go up is same as the time taken to come down.