I need help with A and B. Please show work. Thanks. O EF151 Fall, 2013 calendar

Question

I need help with A and B. Please show work. Thanks.

O EF151 Fall, 2013 calendar x EF 151 SCHW Assessment x O mpoland1 W 4-2-5 C efengr.utk.edu/ef151-2013-08/sys.php?f assess/main Notes 'Calcs: 0.13 m 2.1 rad/s2 Save Params USify 35 A motor is used to turn the pulley A which is Manage Note Images connected to the wheel B by a transmission belt. The system starts from rest. The motor begins to rotate the pulley A with a constant 2.1 the transmission belt does not slip on the pulley or the wheel. EXAMPLE Part Description Answer Chk History Determine the linear speed of point P after 4.17 pts 75 a tries: o wheel B has turned one revolution. (include units with answer) 2% try penalty Hints: 2.1 Determine the time for wheel B to complete the second revolution. 4.17 pts. a tries: Note: this answer does not include the time for the first revolution. 2% try penalty (include units with answer) Previous Next 3:32 PM

Explanation / Answer

a) 2.1 *0.13 = 0.35 * alpha of wheel

Alpha of wheel = 0.78 rad/sec^2

V ^2 = U^2 + 2*aS

V^2 = 2* 0.78 * 2*pi = 9.8

v= 3.13 m/sec

b) V^2 = U^2 + 2aS

V^2 = 3.13^2 + 2 * 0.78 * 2*pi

V = 4.42 m/sec

V = u + at

t = V - u / a = 1.6628 sec

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