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robax25

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## Homework Statement

A jumper departs from an inclined plane with a velocity of 100km/h and no rotation. He wants to summersault while he is airborne within 2s.Based on the conservation of angular momentum, he will start tom rotate if his wheel's rotation is slowed down. His wheels are hollow cylinder with a radious of 0.4m and a mass of 10kg. The inertia of the bike and him is 200kgm².Calculate how much the wheels' rotation has to be modified in order to make a full rotation of the bike during 2s.Let's assume the angular velocity can be changed within 0.1s. which angular acceleration does that correspond to?Find out

1) Initial angular velocity of the wheel.

2)required angular momentum of the bike.

3)Modified angular velocity of the bike

4)Angular acceleration

## Homework Equations

Angular momentum L=I*omega. [/B]

## The Attempt at a Solution

1) omega ω= 69.44 rad/s.

2)Angular momentum L=13888 kgm²/s

3)

4)Angular acceleration =694.4 rad/s²