Question

(17%) Problem 4: Consider the 14 kg motorcycle wheel shown in the figure. Assume it to be approximately a ring with an inner radius of 0.285 m and an outer radius of 0.34 m. The motorcycle is on its center stand, so that the wheel can spin freely. A 33% Part (a) If the drive chain exerts a force of 2750 N at a radius of 4.95 cm, what is the angular acceleration of the wh square second? al ( E sino cos t ano cotano asin() acoso atan() acotan sinh() cosh tanh) | Coanh). Degrees Radians 7 4 1 8 5 2 9 6 3 Z VO HACKSPACH C LLAR Submit Hint Feedback I give up! Hints: 4% deduction per hint. Hints remaining 1 Feedback: 5 deduction per feedback. A 33% Part (b) What is the tangential acceleration, in meters per square second, of a point on the outer edge of the tire? 33% Part (C) How long, in seconds, starting from rest, does it take to reach an angular velocity of 71.5 rad/s? Al 2019 E TA. LLC

Answer 1

moment of Trestia= 4 m (azz + sez) = 7 (0.9852 + 0.34) 1 I = 1.38 kq m² a = I = Te = 2150x 0.0495 = 77.24 I E 1.38 rad/8² tangential acceleration - 26•263 m/s2 times w = 0.99 sec

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