Calculate the work done by a force of 30N in lifting a load of 2kg to a height of 10m (g = 10 ms-2)
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Answer:
We know that,
Work (W) = Force (F) × Displacement (s)
Therefore,
W = 30 x 10 =300J
But, the force exerted by the Gravity, = Mg
Hence, negative work done my displacement = Mgh
= 2(-10)(10)
=-200
Therefore Work done = 300 + (-200)
=100J
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