EASY
Earn 100

State the SI unit of acceleration due to gravity.

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 :
EASY
Science>Physics>Gravitation>Free Fall
The value of acceleration due to gravity is:
MEDIUM
Science>Physics>Gravitation>Free Fall
A body is dropped from rest. Its velocity varies with displacement covered as: 
EASY
Science>Physics>Gravitation>Free Fall
The value of acceleration due to gravity g on the Earth will be maximum at :
MEDIUM
Science>Physics>Gravitation>Free Fall
Imagine you have come back from the International Space Station. Share experience with your friends what you have observed there.
EASY
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.
MEDIUM
Science>Physics>Gravitation>Free Fall
Why will a sheet of paper fall slower than one that is crumpled into a ball? 
EASY
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?

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.
MEDIUM
Science>Physics>Gravitation>Free Fall
Why is the value of 'g' variable on the surface of earth?
MEDIUM
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?
EASY
Science>Physics>Gravitation>Free Fall
A ball falls off a table and reaches the ground in 1 s. Assuming g=10 m s-2, calculate its speed on reaching the ground and the height of the table.
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
A body is thrown upwards. What is the direction of g when the body is falling down?
 
HARD
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.
HARD
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)
HARD
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.
MEDIUM
Science>Physics>Gravitation>Free Fall
An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity? How long will the object take to come back to the earth? Assume g=10 m s-2.