A disk starts spinning from rest at t=0, with a constant angular acceleration of 1.2 rad/s2....
A disk starts spinning from rest at t=0, with a constant
angular
acceleration of 1.2 rad/s2. The radius of the disk is 0.4 m.
Consider a bug clinging to the outer edge of the disk. What is
the
magnitude of the acceleration felt by this bug at t=1 s? Choose
the
closest answer.
Homework Answers
w = w0 + alpha*t
w0 = 0
w = 1.2*1
=1.2
centreletel acceleration = w2r
= 1.2*1.2*0.4
= 0.576
tangential acc = r*alpha = 1.2*0.4 = 0.48
total acc = sqrt(alpha2+centreptel2)
=sqrt(0.48*0.48+0.576*0.576)
= 0.749
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