1.

A ball is dropped from a spacecraft revolving around the earth at a height of 120 km. What will happen to the ball ?

Answer»

it will fall down to the EARTH gradually
it will go very far in the space
it will continue to move with the same speed along the original orbit of spacecraft
it will move with the same speed, tangentially to the spacecraft.

Solution :Since no EXTERNAL torque is applied THEREFORE, according to law of conservation of ANGULAR momentum, the ball will continue to move with the same angular velocity along the original orbit of the spacecraft.


Discussion

No Comment Found

Related InterviewSolutions