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CBSE Class 11-science Answered

Explain how the work done by the tension in the strings are zero.
Asked by | 04 Dec, 2012, 09:29: PM
answered-by-expert Expert Answer

The work done by tension on the string of a simple pendulum is always zero.

This is because the direction of tension is such that it always acts perpendicular to the displacement produced. So, as ? = 90o, Cos? = 0 and so is the work done (work done being W = FsCos?)

Answered by | 11 Dec, 2012, 04:25: PM

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