Find the work done in lifting a 50 kg bucket a water through a vertical height of 2 m.

The work done in turning a magnet of magnetic moment M through an angle theta from the meridian is

Can you lift a bucket of water without holding it?

Find the amount of work done in rotating a magnet through an angle theta against the torque acting due to uniform magnetic field. What happens to the work done?

Calculate the work done in moving a charge of 2C through a potential differerence of 5 v

There is an electric field E in x-direction. If the work done on moving a charge of 0.2C through a distance of 2m along a line making a angle 60^@ with x-axis is 4 J, then what is the value of E?

What is the work done in holding a 15 kg suitcase whiel waiting for a bus for 15 mimnutes?

A person trying to lose weight (dieter) lifts a 10 kg mass, one thousand times, to a height of 0.5 m each time. Assume that the potential energy lost each time she lowers the massis dissipated:- How much work does she do against thegravitational force ?

An open metal bucket is in the shape of a frustum of a cone, mounted on a hollow cylindrical base made of the same metallic sheet (see Fig. 13.23). The diameters of die two circular ends of the bucket are 45 cm and 25 cm, the total vertical height of the bucket is 40 cm and that of the cylindrical base is 6 cm. Find the area of the metallic sheet used to make the bucket, where we do not take into account the handle of the bucket. Also, Find the volume of water the bucket can hold. (Take pi=22/7 ).

The sign of work done by a force on a body is important to understand. State carefully if the following quantities are positive or negative:- work done by a man in lifting a bucket out of a well by means of a rope tied to the bucket.