Question

A body of mass 2 kg is hung on a spring balance mounted vertically in a lift. If the lift

descends with an acceleration equal to the acceleration due to gravity ‘g’, the reading

on the spring balance will be​

Answer 1

Answer:

0

Explanation:

Mass of the body m=2kg

Acceleration of lift in downward direction a=g

Let the reading of spring balance be N.

Equation of motion for the body : ma=mg−N

Or mg=mg−N (∵a=g)

⟹ N=mg−mg=0

Thus the spring balance will show zero reading