EASY
10th Maharashtra Board
IMPORTANT
Earn 100

What will be the value of g at the centre of the earth?

Important Questions on Gravitation

EASY
10th Maharashtra Board
IMPORTANT
Will your weight remain constant as you go above the surface of the earth?
EASY
10th Maharashtra Board
IMPORTANT
Suppose you are standing on a tall ladder. If your distance from the centre of the earth is 2R, what will be your weight?
EASY
10th Maharashtra Board
IMPORTANT
According to Newton's law of gravitation, earth's gravitational force is higher on an object of larger mass. Why doesn't that object fall down with higher velocity as compared to an object with lower mass?
MEDIUM
10th Maharashtra Board
IMPORTANT

Study the entries in the following table and rewrite them putting the connected items in a single row.

I II III
Mass m s-2 Zero at the centre
Weight kg Measure of inertia
Acceleration due to gravity N m2 kg-2 Same in the entire universe
Gravitational constant N Depends on height
HARD
10th Maharashtra Board
IMPORTANT
What is the difference between mass and weight of an object? Will the mass and weight of an object on the earth be same as their values on Mars? Why?
HARD
10th Maharashtra Board
IMPORTANT
What are (i) free fall, (ii) acceleration due to gravity (iii) escape velocity (iv) centripetal force?
HARD
10th Maharashtra Board
IMPORTANT
Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?
HARD
10th Maharashtra Board
IMPORTANT
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.