Total energy of a system is always conserved, no matter what internal and external forces on the body are present.

Monjur Alahi

Total energy of a system is always conserved, no matter what internal and external forces on the body are present.

State if each of the following statements is true or false. Give reasons for your answer.


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Salim Ahmed Kawsar

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False

Although internal forces are balanced, they cause no work to be done on a body. It is the external forces that have the ability to do work. Hence, external forces are able to change the energy of a system.

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