A block of mass M slides down an inclined plane that makes an angle θ with the horizontal. The coefficient of kinetic friction b
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Answer:
(D) It is equal to the original velocity of the skater.
Explanation:
The velocity of the center of mass of a system is
The velocity of the center of mass is constant if there is no external force, because the total momentum of the whole system is conserved.
So, before the snowball is thrown, the velocity of the center of mass is equal to that of the skater. This velocity will always be equal to the velocity of the center of mass of the system.
Answer:
Explanation:
We are given that
Net force=F=
Mass,m=1.21 kg
Radius,r=0.723 m
We have to find the magnitude of its angular acceleration.
Moment of inertia ,
Substitute the values
Torque ,