1.

A lift is moving down with acceleration a. A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the around are respectively :

Answer»

g,g
g-a,g-a
g-a,a
a,g

Solution :As the lift is DESCENDING with an acceleration .d., the acceleration of the BALL for the man in the lift will be `(g-a)` and for the stationary man on the GROUND the acceleration will be g.. Hence CHOICE is (c).


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