The mass of a body measured by a physical balance in a lift at rest is – McqOptions

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1.	The mass of a body measured by a physical balance in a lift at rest is found to be m. If the lift is going up with an acceleration a, its mass will be measured as [MP PET 1994]
A.	\[m\left( 1-\frac{a}{g} \right)\]
B.	\[m\left( 1+\frac{a}{g} \right)\]
C.	m
D.	Zero
Answer» D. Zero

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