Gravitation Quiz 2

The value of gravitational constant, G is

Acceleration due to gravity above the Earth’s surface at a height equal to the radius of the Earth is ____

If R is the radius of the Earth and g is the acceleration due to gravity on the Earth’s surface, the mean density of the Earth is

Which of the following statements is not correct for the decrease in the value of acceleration due to gravity?

Calculate angular velocity of Earth so that acceleration due to gravity at 60° latitude becomes zero. (Radius of Earth = 6400 km, gravitational acceleration at poles = 10 $m/s ^2$, cos60° = 0.5)

The gravitational potential energy per unit mass at a point gives ________ at that point.

A satellite is orbiting around a planet at a constant height in a circular orbit. If the mass of the planet is reduced to half, the satellite would

How does the escape velocity of a particle depend on its mass?

Escape velocity on a planet is $v_e$. If radius of the planet remains same and mass becomes 4 times, the escape velocity becomes

If the escape velocity of a body on Earth is 11.2 km/s, the escape velocity of the body thrown at an angle 45° with the horizontal will be