Question

A 10 m long beam is pivoted at its centre. A 5.0 N weight is attached
to one extreme end of the beam and an empty pan weighing 0.25 N is
attached to the other extreme end of the beam. What is the moment
of couple at pivot.​

Answer 1

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Answer 2

The moment of couple at pivot is 23.75 Nm.

Explanation:

Given that,

Length of beam = 10 m

Weight on one end = 5.0  N

Weight of other end = 0.25 N

We need to calculate the moment of couple at pivot

Using formula of moment of couple

$M=F_{1}\times d_{1}-F_{2}\times d_{2}$

Put the value into the formula

$M=5.0\times5-0.25\times5$

$M=23.75\ Nm$

Hence, The moment of couple at pivot is 23.75 Nm.

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Topic : moment of couple

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