Home
Class 11
PHYSICS
A solid right cylinder of length l stand...


A solid right cylinder of length l stands upright at rest on the bottom of a large tub filled with water up to height h as shown in the figure-I density of material of the cylinder equals to that of water. Now the cylinder is pulled slowly out of water with the help of a thin light inextensible thread as shown in figure-II. Find the work done by the tension force develop in the thread.
(a). mgh
(b). mgl
(c). 0.5 mgl
(d). mg(0.5l+h)

Text Solution

Verified by Experts

The correct Answer is:
C
Work done by tension force=work done by gravity =0.5mgl
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN |Exercise Exercise 1 (Elasticity)|16 Videos

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN |Exercise Exercise 1 (Surface Tension)|21 Videos

  • CENTRE OF MASS

    ALLEN |Exercise EXERCISE-V B|19 Videos

  • ERROR AND MEASUREMENT

    ALLEN |Exercise Part-2(Exercise-2)(B)|22 Videos

Similar Questions

Explore conceptually related problems

A wooden cylinder of diameter 4 r, height H and density rho//3 is kept on a hole of diameter 2 r of a tank, filled with water of density rho as shown in the If height h_(2) of water level is further decreased, then

Work done in the cyclic process shown in figure is :-

A solid cylinder of mass M and radius R rolls without slipping down an inclined plane of length L and height h. What is the speed of its centre of mass when the cylinder reaches its bottom?

A wooden block with a coin placed on its top, floats in water as shown in figure . The distance L and H are shown in the figure .after sometime the coin falls into the water , then

The curved surface area of a cylinder is 88 cm^(2) . If the height of the cylinder is 4 cm, find its volume.

A cylinder of height 20m is completely filled with water. The velocity of effux of water (in ms^(-1)) through a small hole on the side wall of the cylinder near its bottom is

A solid cylinder rolls up an inclined plane of angle of inclination 30° . At the bottom of the inclined plane the centre of mass of the cylinder has a speed of 5 m/s. (a) How far will the cylinder go up the plane? (b) How long will it take to return to the bottom?

A conical vessel with radius 10 cm and height 15 cm is completely filled with water. This water is poured into a cylinder with radius 5 cm. Find the height of water in the cylinder.

A wooden cylinder of diameter 4 r, height H and density rho//3 is kept on a hole of diameter 2 r of a tank, filled with water of density rho as shown in the If level of liquid starts decreasing slowly, when the level of liquid is at a height h_(1) above the cylinder, the block just start moving up. Then the value of h_(1) is

A wooden cylinder of diameter 4 r, height H and density rho//3 is kept on a hole of diameter 2 r of a tank, filled with water of density rho as shown in the The block in the above question is maintained by external means and the level of liquid is lowered. The height h_(2) when this external force reduces to zero is