Question

A wheel starts from rest and has an angular acceleration of 4.0 rad/s2. When it has made 10 rev its angular velocity is: (a) 16 rad/s (b) 22 rad/s (c) 32 rad/s (d) 250 rad/s​

Answer 1

Answer:

22 rad/sec

Explanation:

w² = w.²+ 2às

s= angular displacement

à=angular acceleration

Answer 2

Answer:

b) 22rad/s

Explanation:

Wi=0

Wf=W

2(alpha)(theta)=Wf2-Wi2

2(4)(10×2π)=W2. as {1rev=2πrad}

160π=W2

W=√(160π)

W=22rad/s.