Motion in a Plane - Result Question 57
60. A body is whirled in a horizontal circle of radius $20 cm$. It has an angular velocity of $10 rad / s$. What is its linear velocity at any point on circular path
[1996]
(a) $\sqrt{2} m / s$
(b) $2 m / s$
(c) $10 m / s$
(d) $20 m / s$
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Solution:
- (b) Radius of circular path $=20 cm=\frac{2}{10} m$
Angular speed of body $=10 rad / s$
Linear velocity $=$ radius $\times$ Angular speed
$=\frac{2}{10} \times 10=2 m / s$
