Review ViewTable Open in Word Tell me whåt you wa t A bicycle wheel is rotating

Question

Review ViewTable Open in Word Tell me whåt you wa t A bicycle wheel is rotating at 49 rpm when the cyclist begins to pedal harder, giving the wheel a What is the costant angular acceleration of 0.42 rad/s2- ! 9.0 s later? Part A aWhat is the wheer's angular velocity, in rpm, Express your answer to two significant figures and include the appropriate units Part B How many revolutions does the wheel make during this time? (rad/s) 20 10 0 2-How many revolutions does the object make during the first 4.0 s2

Explanation / Answer

A)

i=49rpm = (49*2rad)/(60s) = 5.13 rad/s

t=9.0s

=0.42rad/s2

f = i+*t

f = 5.13+0.42*9.0

f = 8.91rad/s

B)

f2= i2 +2

8.912 = 5.132 +2*0.42*

= 63.18 rad

1 rev = 2 rad

= 63.18/2 = 10.06 rev

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