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

Options

A. `W = W_(1) +W_(2)` if the system is at rest
B. `W gt W_(1) +W_(2)` if the system moves down with some acceleration
C. `W_(1) gt 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

Answer

A, B, D