MEDIUM
11th West Bengal Board
IMPORTANT
Earn 100

Does the velocity of escape of a body from the earth depend on the mass of the body, the location from where it is projected, the direction of projection, the height of the location from where the body is projected. Explain your answer.

Important Questions on Gravitation

EASY
11th West Bengal Board
IMPORTANT

An artificial satellite orbiting the earth in very thin atmosphere loses its energy gradually due to dissipation against atmospheric resistance, however small. Why then does its speed increase progressively as it comes closer and closer to the earth ?

MEDIUM
11th West Bengal Board
IMPORTANT
Why rockets are launched from west to east in the equatorial plane?
MEDIUM
11th West Bengal Board
IMPORTANT
Why rockets are launched in the direction from west to east in the equatorial plane ?
HARD
11th West Bengal Board
IMPORTANT
State the universal law of gravitation. Why it is called universal? Explain that this law agrees with Newton's third law of motion. What is the meaning of G? Find its dimension and state its value in MKS system.
HARD
11th West Bengal Board
IMPORTANT
What is gravity? What is acceleration due to gravity? Why it is independent of mass of the falling body? Derive the formulas for the variation of the acceleration due to gravity with height of a place.
HARD
11th West Bengal Board
IMPORTANT
Derive the formulas for the variation of the acceleration due to gravity with the depth of a place.
HARD
11th West Bengal Board
IMPORTANT
Derive the formulas for the variation of the acceleration due to gravity due to the diurnal motion of the earth. Where the value of g has maximum value?
HARD
11th West Bengal Board
IMPORTANT
Find the expressions showing the variation of acceleration due to gravity g with distance r from the centre of the earth, as r varies from 0 to , Show the variation graphically.