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01-10-2019
Physics

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A 3.05 kg block is sliding across level ground with uk=0.250. what is the friction force?(unit=N)

Respuesta :

MathPhys MathPhys

01-10-2019

Answer:

7.48 N

Explanation:

Friction force equals the normal force times the coefficient of friction.

F = Nμ

For a block on level ground, the normal force equals the weight.

N = mg

Therefore:

F = mgμ

F = (3.05 kg) (9.81 m/s²) (0.250)

F = 7.48 N

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