A mass m is attached to a string connected to a force sensor on a rotating platform. The platform’s angular velocity, ω, can be
easily measured, but the linear velocity of the mass cannot. When the mass is at r = 0.20 m and rotates at a constant ω = 8.5 rad/s, a force sensor reads 4.8 N. What is the mass m?
<u>Option-(E): </u>Bike B; its wheels have a smaller moment of inertia.
Explanation:
The two cyclists travel at the same speed on level ground, as they approach a low hill and decide to coast up instead of hard pedaling. At the top of the hill, as bike "B" will have a larger speed, as compared to the bike "A".Due, to the effect of having smaller moment of inertia, I=m×r².
Having no friction nor air resistance, and all the wheels roll on the ground without slipping. While, the B have larger speed,v due to the fact that bike "B" will have a larger speed,"v" as compared to the bike "A".
