Which of these activities might involve a chemist? Question options: measuring the motions of a planet determining the fat conte
2 answers:
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Explanation:
The particle will be at rest when its velocity is equal to zero. Recall that the velocity is simply the derivative of the position
with respect to time:
Since
then
Solving for t, we find that the particle will be at rest at
Answer:
90.78 rev/min
Explanation:
In first place, we have to do the force balance to determine the minimum angular speed required to avoid slipping. The forces acting here are friction and the force due to circular movement, that is centripetal force. Then, we have:
μmg=mRω^2
ω=
Then, replacing the given values in the expression we have the following result:
ω=1.51 rev/s*60s=90.78 rev/min