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In an experiment with a beam balance, an...

In an experiment with a beam balance, an unknown mass `m` is balanced by two known masses of `16 kg` and `4 kg` shown in Fig. The value of the unknown mass `m` is

A

`10 kg`

B

`6 kg`

C

`8 kg`

D

`12 kg`

Text Solution

Verified by Experts

The correct Answer is:
C
Balancing the torque:
for the first case: `16l_(1)=ml_(2)`
for the second case `ml_(1)=4l_(2)`
Divide them to get `m=8kg`
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