Physics-
General
Easy
Question
A solid right cylinder of length 
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.
- mgh
- mg
- 0.5 mg
- mg(0.5+h)
+h)
The correct answer is: 0.5 mg
Work done by tension force = work done by gravity = 0.5 mg
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