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A girl of mass 40 kg stands on a scale balance in a lift. The lift is upwards. At one instant the acceleration of the...

A girl of mass 40 kg stands on a scale balance in a lift. The lift is upwards. At one instant the acceleration of the lift is 2m/s. Calculate the reading on the scale at that instant.

Answers


Wilfred
Total force downward = weight of the girl = 400N. Since the lift is moving upwards the upward force T, is greater than 400N therefore from
F=ma
(T-400)=40x2

T= 480N= reading
Wilfykil answered the question on March 26, 2019 at 10:33

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