MCQ Tutorial - Physics->Gravitational

1.) If the angular speed of the earth is doubled, the value of acceleration due to gravity (g) at the
north pole

Options are:

A.) Remain Same

B.) Becomes half

C.) Becomes zero

D.) Doubles

2.) The weight of a body at the centre of the earth is:

Options are:

A.) Infinite

B.) Zero

C.) Eight times

D.) Same as on the surface of earth

3.) The time period of a simple pendulum on a freely moving artificial satellite is:

Options are:

A.) 3 Sec

B.) Zero

C.) 2 Sec

D.) Infinite

4.) At what height over the earths pole, the free fall acceleration decreases by one percent (assume the
radius of earth to be 6400 km):

Options are:

A.) 8 km

B.) 32 km

C.) 1.253 km

D.) 64 km

5.) The radius of the earth is 6400 km and g=10 In order that a body of 5 kg weights zero at the
equator, the angular speed of the earth is:

Options are:

A.) 1/400 radian/sec

B.) 1/800 radian/sec

C.) 1/1600 radian/sec

D.) 1/80 radian/sec