A bar rotating at the same speed is moving faster than a bar dropping from the same height. w=7.352 rad/8 is the linear velocity.
v=wxr, w=7.352rad/8
The resistance to motion created when two objects rub against one another is called friction. Friction occurs whenever two items come into contact with one another. Friction force and inversely proportional from the motion and works against it. The two surfaces' respective materials have an impact on how much friction exists.
The force produced by two surfaces coming into contact and sliding against one another is referred to as frictional force. The following variables impact the frictional force: Surface roughness and the force acting pressing them together have the biggest an impact on these forces.
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