Question:
The work done by all the forces (external and internal) on a system is equal to change in
The work done by all the forces (external and internal) on a system is equal to change in
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If all forces are involved $\longrightarrow$ think total energy, not just KE.
Updated On: Apr 22, 2026
- total energy
- kinetic energy
- potential energy
- None of these
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The Correct Option is A
Solution and Explanation
Concept:
Work-energy theorem for a system:
\[
W_{\text{total}} = \Delta E_{\text{total}}
\]
This includes both kinetic and potential energy.
Step 1: Understanding forces.
All forces (internal + external) contribute to total work.
Step 2: Energy relation.
\[ \text{Total Energy} = \text{K.E.} + \text{P.E.} \]
Step 3: Conclusion.
Thus, total work done changes total energy.
Step 1: Understanding forces.
All forces (internal + external) contribute to total work.
Step 2: Energy relation.
\[ \text{Total Energy} = \text{K.E.} + \text{P.E.} \]
Step 3: Conclusion.
Thus, total work done changes total energy.
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