AP EAMCET · PHYSICS · Work Power Energy
A bead of mass is moving along a straight line under a force that delivers a constant power to the bead. If the bead is initially at rest, the speed it attains after in
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Work done =Pt =1.2×6=7.2 J From work-energy theorem we can write, ∆KE=work done 12×0.4×v2-0=7.2 ⇒v2=36⇒v=6 m s-1
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