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9 March, 00:30

A cyclist allows his bike to roll down a hill without pedaling. Towards the bottom of the hill he applies his brakes. The bike comes to a stop. Applying the brakes causes the brakes to warm up. Describe the energy transfers that have occurred. State the forces doing work that couses each these energy transfers. You can ignore any friction between the bike and the ground and any air resistance.

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  1. 9 March, 00:45
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    Explanation:

    Gravitational force does work on the bike

    - This causes energy to be transferred from the gravitational potential energy store of the bike to its kinetic energy store.

    - Friction force does work between the brake pads and the wheels.

    - This causes energy to be transferred from the bike's kinetic energy store to the thermal energy store of the break pads.
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Home » Physics » A cyclist allows his bike to roll down a hill without pedaling. Towards the bottom of the hill he applies his brakes. The bike comes to a stop. Applying the brakes causes the brakes to warm up. Describe the energy transfers that have occurred.
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