A Man Weighs 80Kg. He Stands On A Weighing Scale In A Lift Which Is Moving Upwards With A Uniform Acceleration Of 5 M/S2. What Would Be The Reading On The Scale?


Weight of a man — 80kg.

Uniform Acceleration of lift –5 M/S2

When the lift is moving upwards, the reading of the weighing scale will be equal to R.

Reading of weighing scale = m(g+a)

R = Mg + M(g + a)

R = m(g + a)

R = 80 (10 + 5)

R = 80 × 15

R = 1200 N

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