Moments, Equilibrium, Work, Energy, Power and Machines

  • H. J. P. Keighley
Part of the Macmillan Work Out Series book series (MCWO)


When a body is in equilibrium, the resultant force on it is zero and the sum of the clockwise moments about a point is equal to the sum of the anticlockwise moments about the same point. In Fig. 4.1 a beam is balanced at its centre point. Using the measurements shown in the diagram,
Figure 4.1

Clockwise moment = Anticlockwise moment = 12 N m.

clockwise moment = 2N×6m= 12Nm anticlockwise moment = 3N×4m= 12 Nm


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© H. J. P. Keighley 1987

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  • H. J. P. Keighley

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