Q.
A body of mass $M$ is moving with a uniform speed of $10\ m/s$ on frictionless surface under the influence of two forces $F_{1}$ and $F_{2}$. The net power of the system is
A) $10F_{1}F_{2}M$
B) $10\left( F_{1} + F_{2} \right)M$
C) $\left( F_{1} + F_{2} \right)M$
D) Zero
Explanation
(d) $\because$ Speed is constant
$\therefore$ Work done by forces = 0
$\therefore$ Power $= \frac{Work}{Time} = 0$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.