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Flame SCF 18 Near Chawla Lights Ph-7 Mohali 9888949978

4. 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

(a) m (1- a/g) (b) m (1 + a/g)

(c) m (d) Zero

Ans. c

5/5 - (1 vote)

PrevPreviousThe relationship between the force F and position x of a body is as shown in figure. The work done in displacing the body from x = 1 m to x = 5 m will be

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