A body rotating with an angular speed of 600 rpm is uniformly accelerated to 1800 rpm in 10 sec. The number of rotations made in the process is ___________.
Answer (integer)
200
Solution
${\omega _f} = {\omega _0} + \alpha t$<br><br>$\alpha = 1200 \times 6$<br><br>$\theta = {\omega _0}t + {1 \over 2}\alpha {t^2}$<br><br>$$ = 600 \times {{10} \over {60}} + {1 \over 2} \times 1200 \times 6 \times {1 \over {36}}$$<br><br>$\theta = 200$
About this question
Subject: Physics · Chapter: Rotational Motion · Topic: Centre of Mass
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