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Question
The work done by all the forces (external and internal) on a system equals the change in ______.
Options
total energy
kinetic energy
potential energy
none of these
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Solution
The work done by all the forces (external and internal) on a system equals the change in kinetic energy.
Explanation:
As we know that the work done by the external force changes into the total energy but the internal force acting in the object can only vibrate the molecules or the atoms which further leads to the movement as the result of which Kinetic energy also increases.
Thus, the work done by all the forces (External or Internal) will completely lead to increases in the kinetic energy.
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