Question

Monkey sits on the pan of a spring scale kept in an elevator. The reading of the spring scale will be maximum when the elevator

Answer 1

Answer:

it will be maximum when the elevator is accelerated upwards.

Explanation:

There are two forces on the spring balance. The weight of the monkey is the downward force. The floor of the elevator exerts an upward force on the scale. Let the mass of the monkey be 10 kg.

Weight = 10 * 9.8 = 98 N

This is the scale reading when the elevator is stationary or freely falling. Let’s assume the elevator is accelerating upward at 4 m/s^2.

Net force = F – 98

F – 98 = 10 * 4

F = 138 N

This is the scale reading when the elevator is accelerating. Let’s assume the elevator is accelerating downward at 4 m/s^2.

Net force = 98 – F

98 – F = 10 * 4

F = 58 N

This proves that the maximum scale reading is when the elevator is accelerating upward. I hope this is helpful for you.