Question

Exercise 2:

This is a version of Thursday’s half sheet exercise. Suppose you have a wheel

which has an angular acceleration of 1.00rad/s

2

and a radius of 35.0cm. The wheel starts from

rest, and all it does is rotate, not roll. It’s on a bike on a stationary trainer.

A) At t = 0.00s, find the (initial) tangential acceleration and radial (aka centripetal) acceleration

for a point at the top on the rim of the tire.

B) At 4.00 seconds after start, find the angular velocity, tangential velocity (speed, really) and

the two accelerations mentioned in part A.

C) Repeat part B for 8.00 seconds after start. (Three of the answers are 2.80m/s, .350m/s

2

, and

22.4m/s

2

.)

D) Summarize your result by indicating what values are changing and what are staying constant.

Answer 1

hay anaular accdeatin, 19radf iadius, 9 35 cm 0.0569 t= 0 toheel stah so its itial - Cabipetalarceleration bo (0 Hgential arcdeadi en a 0.35 m/s2 Ctz ty 0.35 me final asgular velocity initial elacly given t ec 4adls 1.YOmlS 0.35x4 Tgeatial vedaky 0.35 m1s2 5.6 m2 1 at t-Phee 0.85x8-2.mls a-35m/s खो सिमढप्नीक वट्य () वणव anबeकल वटटचष ो ar Constant and au other quantities are Varying.

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