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A spring balance reads W(1) when a ball ...

A spring balance reads `W_(1)` when a ball is suspended from it. A weighing machine reads `W_(2)` when a tank of liquid is kept on it. When the ball is immersed in the liquid, the spring balance reads `W_(3)` and the weighing machine reads `W_(4)`. Then, which of the following are not correct?

A

`W_(1)ltW_(3)`

B

`W_(1)ltW_(3)`

C

`W_(2)ltW_(4)`

D

`W_(2)gtW_(4)`

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
`W_(1), W_(3)` are the forces exerted by the ball and the spring balance on each other before and after immersion. `W_(2),W_(4) ` are the forces exerted by the tank and the weighing machine on each other before and after immersion.

Let `m` and `M` be the same masses of the ball and the tank, respectively, and let `N` be the forces of interacton betwen the ball and the liquid in the tank
`W_(1)=mg`
`W_(2)=Mg`
`W_(3)=N=mg`
`W_(4)=N+Mg`
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