A weight lifter jerks 220 kg vertically through 1.5 m and holds still at that height for two minutes. What is the work done in lifting and in holding it still
respectively

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Solution

Potential energy in doing so =mgh
PE = mgh
=220x9.81x1.5
=3273.3 joules

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A weight lifter jerks 220 kg vertically through 1.5 m and holds still at that height for two minutes. What is the work done in lifting and in holding it still respectively

Potential energy in doing so =mgh PE = mgh =220x9.81x1.5 =3273.3 joules

A weight lifter jerks 220 kg vertically through 1.5 m and holds still at that height for two minutes. What is the work done in lifting and in holding it still
respectively

Potential energy in doing so =mgh
PE = mgh
=220x9.81x1.5
=3273.3 joules