What is the amount of work done by a weight-lifter in holding a locomotive against gravity, if it is travelling on a level plane ?

What is the amount of work done by a weight-lifter in holding a weight of 120 kg on his shoulder for 30 s?

When is the work done by gravity negative ?

What is the maximum amount of work done in 10 s by a 20 kW engine?

The amount of work done by the gas during expansion is greatest by

When a body is thrown up, work done by gravity on the body is

The amount of work done in carrying a unit N-pole from infinity to a point against the magnetic field is

no work is done against gas.

Amount of work done is 10 Joule, here 10 standard for

Calculate the amount of work done in moving a body up a rough inclined plane .

A cylinder containing a gas is lifted from the first floor to the second floor. What is the amount of work done on the gas? What is the amount of work done by the gas? Is the internal energy of the gas increased ? Is the tempreture of the gas increased?