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Alla [95]
3 years ago
8

The coefficients of friction between a race cars tyres and the track surface are

Physics
1 answer:
Luba_88 [7]3 years ago
5 0

the question is about tyres of a race car, which are made of rubber and will be in contact with a race track, which is generally made from asphalt, the static coefficient of friction is in the range of (0.5–0.8), in dry conditions (Source: Friction and Friction Coefficients ).

Explanation:

please mark me as a brainlieast

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Answer:

<em>The force that would be applied on the rope just to start moving the wagon is 122 N</em>

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Frictional force opposes motion between two surfaces in contact. It is the force that must be applied before a body starts to move. Static friction  opposes the motion of two bodies that are in contact but are not moving. The magnitude of static friction to overcome for the body to move  can be calculated using equation 1.

F = μ x mg .............................. 1

where F is the frictional force;

          μ is the coefficient of friction ( μs, in this case, static friction);

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from the equation we are provide with;

       μs  = 0.25

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       g =  9.81 m/s^{2}

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Using equation 1

F = 0.25 x 50 kg x  9.81 m/s^{2}

F = 122.63 N  

<em>Therefore a force of 122 N must be applied to the rope just to start the wagon.</em>

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