The relationship between force and position is shown in the given figure (in a one-dimensional case). The work done by the force in displacing a body from $$x = 1$$ cm to $$x = 5$$ cm is:

1. $$20$$ ergs
2. $$60$$ ergs
3. $$70$$ ergs
4. $$700$$ ergs

Subtopic: Â Work Done by Variable Force |
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A position dependent force $$F=7-2x+3x^2$$ N acts on a small body of mass $$2$$ kg and displaces it from $$x = 0$$ to $$x = 5$$ m. The work done in joule is:

 1 $$70$$ 2 $$270$$ 3 $$35$$ 4 $$135$$
Subtopic: Â Work Done by Variable Force |
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A body is displaced from (0, 0) to (1m, 1m) along the path x=y by a force $F=\left({x}^{2}\stackrel{^}{j}+y\stackrel{^}{i}\right)N$. The work done by this force will be :

1. $\frac{4}{3}J$

2. $\frac{5}{6}J$

3. $\frac{3}{2}J$

4. $\frac{7}{5}J$

Subtopic: Â Work Done by Variable Force |
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When a body moves non-uniformly on a circular path:
 1 no work is done by the tangential force. 2 no work is done by the centripetal force. 3 work done by the tangential force is always positive. 4 work done by the centripetal force is negative.
Subtopic: Â Work Done by Variable Force |
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