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A zero-momentum spin stabilized satellite has a momentum wheel spinning at 5000 rpm. The angular momentum...

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Mechanical Engineering

A zero-momentum spin stabilized satellite has a momentum wheelspinning at 5000 rpm. The angular momentum of the wheel is 100N-m-sec.

a) What is the spin rate of the satellite if its moment ofinertia is 500 kg-m2?

b) What is the moment of inertial of the wheel?

c) If there were a problem with the wheel and it was stopped,what would be the spin rate of the satellite?

d) Assuming the problem was fixed, how long would it take to getback up to a speed of 4000 rpm applying a motor torque of 0.1N-m?

e) What would the new spin rate of the satellite be?

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