TS EAMCET · Physics · Work Power Energy
A force acts on a body of mass \(15 \mathrm{~kg}\), initially at rest. If the instantaneous power due to the force at the end of the third second is \(5 \mathrm{~W}\), then the instantaneous power (in W) at the end of the \(4 \mathrm{~s}\) will be
- A 6.33
- B 6.67
- C 6.29
- D 6.94
Answer & Solution
Correct Answer
(B) 6.67
Step-by-step Solution
Detailed explanation
Mass of the body, \(m=15 \mathrm{~kg}\) The instantaneous power due to the force \(F\) at the end of 3s, \(P=5 \mathrm{~W}\). Acceleration, \(a=\frac{F}{m}\) From kinematics, \(v=u+a t\)…
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