Question

Assertion : An astronaut experience weightlessness in a space satellite.

Reason : When a body falls freely it does not experience gravity.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option (b) Both A and R are true but R is not correct explanation of A

Explanation :

The statement given in the reason is not the reason for the weightlessness of the astronaut. The centripetal and centrifugal forces cancel out. In the case of free fall, the pseudo acceleration, g acts upwards. The body does not feel it. The body is falling down with acceleration g. In the first case, the force of acceleration due to gravity is cancelled by the centrifugal force acting outwards.