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Ability of a body to do work...

Ability of a body to do work

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State the following statements as true or false. a. The work done by a force on a body is equal to the dot product of the force and displacement of the body. b. Instantaneously, work is not defined. c. When several forces act on a body, the total work is the same as the work done by their resultant.

Fill in the blank spaces by choosing the correct words from the list given below: direction, joule, work, energy, force Q. Ability to do work is called _____.

The ability to do work is called........

State the function of receptors in our body. Think of any three situations where receptors in the body do not work properly. Mention the problems which are likely to arise.

(a) When does a force do work ? (b) State two examples when a force acting on a body does not do any work. (c) State the mathematical expression of work. (d) Name the SI unit of work.

A and B can do a piece of work in 40 days, B and C in 30 days, and C and A in 24 days. How long will it take them to do the work, working together ?

When does a force do work ?

When the value of entropy is greater then the ability for useful work is :