TS EAMCET · Physics · Work Power Energy
A ball of mass \(2 \mathrm{~g}\) released from the top of an inclined plane describes a circular motion of radius \(20 \mathrm{~cm}\) in the vertical plane upon reaching the bottom. The minimum height of the inclined plane is
- A \(20 \mathrm{~cm}\)
- B \(10 \mathrm{~cm}\)
- C \(50 \mathrm{~cm}\)
- D \(60 \mathrm{~cm}\)
Answer & Solution
Correct Answer
(C) \(50 \mathrm{~cm}\)
Step-by-step Solution
Detailed explanation
The motion of ball is as shown below At bottom of incline (at \(P\) ) the potential energy of ball is converted into kinetic energy i.e., \(\begin{aligned} & \frac{1}{2} m v^2=m g h \\ & \Rightarrow \quad v=\sqrt{2 g h} \\ & \end{aligned}\) To complete the vertical circle, the…
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