Question

ubro a belt around 2 wheels have them the does not sup ra=n2.0cm TB=21.0 cm

2 wheels start from rest. Wheel A speeds up according to Alpha acc= (1.75 radians/s^4)t^2
How long does it take until wheel B turns at 150 rev/min? Assume angular velocity of wheel A does not equal that of wheel B.

Answer 1

bet angular velocity of A is WA & B is wp. as they are connected by a belt their tangential velocity, VA = VB WAYA = WB&B - given, TA = 1.75 2 rad 1 dWA 1.754² War att IOWA = (1.75+² dt WA = 1.75 + 1 From 0 8 0 WB 8B = 1.75 +3 X NA 3 Put wb = 1508ev/min = 150X25T redl 60 I 15.71 radle

=) (15:71) (21-0) = 1.75 +2x (120) t=4713 sec? t = 3.61 sec So required time is 3.61 dec.

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