Question

A concrete hoist with a mass of 4500 kg is raised
vertically upward to a distance of 60 m. How much
work is done? Take g=10 ms?. ​

Answer 1

• As we know energy is always conserved
• Hence work done is equals to the potential Energy,
• Mass = 4500 kg.
• Displacement = 60m
• g = 10 m/s
• Potential Energy = ?

we know,

U = mgh

U = 4500×60×10

U = 270000 Joules

Therefore, the work done is 270000 Joules.

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