1 a wheel of radius 02 m starts from rest at t 0 and, Ask an Expert

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1. A wheel of radius 0.2 m starts from rest at t = 0 and rotates with constant angular acceleration about its axis to an angular velocity of 12 rad/s at t = 3 s.
What is the angular acceleration of the wheel?

(a) 4 rad/s2
(b) 15 rad/s2
(c) 7.2 rad/s2
(d) 36 rad/s2
(e) 1.33 rad/s2

2. How many revolutions does the wheel make during the period of acceleration?

(a) 2.9
(b) 3.7
(c) 1.5
(d) 8.6
(e) 6.9

3. At t = 1.5 s, what is the centripetal acceleration of a point on the rim of the wheel?

(a) 4 m/s2
(b) 15 m/s2
(c) 7.2 m/s2
(d) 36 m/s2
(e) 1.33 m/s2

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Category:- Physics
Reference No.:- M91708182

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