In an experiment with a beam balance, an unknown mass m is balanced by two known masses of 16 kg and 4 kg as shown in the figure.The value of the unknown mass m is
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a
10 kg
b
6 kg
c
8 kg
d
12 kg
answer is C.
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Detailed Solution
Balancing the torque:for the first case: 16gl1= mgl2for the second case: mgl1 = 4gl2Divide them to get m = 8 kg
In an experiment with a beam balance, an unknown mass m is balanced by two known masses of 16 kg and 4 kg as shown in the figure.The value of the unknown mass m is