SATHEE: Motion in a Plane - Result Question 57

Motion in a Plane - Result Question 57

60. A body is whirled in a horizontal circle of radius $20 c m$ . It has an angular velocity of $10 r a d / s$ . What is its linear velocity at any point on circular path

[1996]

(a) $\sqrt{2} m / s$

(b) $2 m / s$

(d) $20 m / s$

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Solution:

(b) Radius of circular path $= 20 c m = \frac{2}{10} m$

Angular speed of body $= 10 r a d / s$

Linear velocity $=$ radius $\times$ Angular speed

$= \frac{2}{10} \times 10 = 2 m / s$

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Motion in a Plane - Result Question 57

60. A body is whirled in a horizontal circle of radius 20cm. It has an angular velocity of 10rad/s. What is its linear velocity at any point on circular path

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60. A body is whirled in a horizontal circle of radius $20 c m$ . It has an angular velocity of $10 r a d / s$ . What is its linear velocity at any point on circular path