Question

In: Physics

A 65.0 kg man is riding on a 12.5 kg bicycle. Together they have a kinetic...

A 65.0 kg man is riding on a 12.5 kg bicycle. Together they have a kinetic energy of 2.80 x 10^3. If the bicycle has wheels with radii of 0.450 m, then their frequency of rotation is

Solutions

Expert Solution

Let the frequency of rotation is n.

Let the velocity is v.

Given that the mass of the man and the bicycle is m=(65.0+12.5) kg.

The radius of the wheels of the bicycle is r=0.450 m.

We know the formula of kinetic energy

  

  

     

  

  

Now let the angular velocity of the wheels is .

We know the linear velocity of the wheels

  

  

The frequency of their rotation is 3.0 Hz approximately.


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