A uniform disc of radius R is spined
to an angular velocity 6, and then
carefully placed on a horizontal
surface. If pressure exerted by the disc
on surface is regarded as uniform and
the coefficient of friction is equal to
k, the rotation of the disc will come to
stop in time t. The value of t is
(1)
(2)
Rwo
kg
3R
4g
3Rwo
4kg
3R.
0
4k
(3)
(4)
Answers
Answered by
0
Answer:
2
Explanation:
2+1
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