A physic major is working to pay his college tuition by performing in a travelin

Question

A physic major is working to pay his college tuition by performing in a traveling carnival.  He rides a motorcycle inside a hollow transparent plastic sphere.  After gaining sufficient speed he travels in a vertical circle with a radius of 13.0 m.  The physics major has mass 70.0 kg, and his motorcycle has mass 40.0kg. a) what minimum speed must he have at the top of the circle if the tires of the motorcycle are not to lose contact with the sphere? b) at the bottom of the circle, his speed is twice the value calculate in part a).  what is the magnitude of the normal force exerted on the motorcycle by the sphere at this point? Please help! lifesaver will be grade, all of my question.

Explanation / Answer

given

radius of verticle cycle = r = 13.0m

mass of physics majour = m = 70.0kg

mass of motor cycle = m = 40.0kg

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