Home Physics Work, Energy, Power and Collision Mix A block of weight W is suspended from a spri…
Physics Work, Energy, Power and Collision Mix MCQ (Single Correct)

A block of weight W is suspended from a spring balance. The lower surface of the block rests on a weighing machine. The spring balance reads W 1 and the weighing machine reads W 2 (W, W 1 W 2 are in the same unit).

A
W = W 1 + W 2 if the system is at rest.
B
W > W 1 + W 2 if the system moves down with some acceleration.
C
W, >W 2 if the system moves up with some acceleration.
D
No relation between W 1 and W 2 can be obtained with the given description of the system.

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The correct answer is:
CHECK THE SOLUTION.

(a, b, d)

The reading of the spring balance and the weighing machine are equal to the forces exerted by them on the body.

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