C Secure https://session.masteringengineering D 7072778&offset-next; Problem 16.

Question

C Secure https://session.masteringengineering D 7072778&offset-next; Problem 16.12 7of8 raLA The power of a bus engine is transmitbed using the belt- Determine the angular velocity of the generator pulley B, measured clockwise, when t-3s and-pulley arrangement shown. The engine turns pulley A at(20t+35) rad/s clockwise, where t is in seconds. (Figure 1) Express your answer using three significant figures. Enter positive value if the angular velocity is clockwise and negative value it the angular velocity is counterclockwise. rad/s Submit Request Answer Part B Figure 1 of 1 Determine the anguiar velooity of the air-condtioning puley C, measured dlockwise, when t3 angular velocity is clockwise and negative value if Express your answer using three significant figures. Enter positive value if the the angular velocity is counterclockwise. 00 mm rad/s 75 mm 50 mm Submit Request Answer Next > Provide Feedback Fs 30 p

Explanation / Answer

Part A

Given

WA = 20t+35

@t = 3 s

WA = 20*3+35 = 95 rad/s

Now we know velocity ratio

WD/WA = Dia of pulley A /Dia of pulley D

Wd / 95 = 75/25

WD = 95*3 = 285 rad/s

Speed of pulley B = speed of pulley D = 285 rad/s

Part B

WC /WB = Dia of pulley B /Dia of pulley C

WC/285 = 100 /50

WC = 285 *2

WC = 570 rad/s

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