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poizon [28]
3 years ago
12

A 30 kg object has a frictional force of 60 N. It's coefficient of friction must be...?

Physics
1 answer:
MrRa [10]3 years ago
3 0

mass = 30kg

frictional force = coefficient of friction * (mass * g)

g = 9.8 m/s^2

So:

60N = x * 294 N

x = 60 N / 294 N = 0,2

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Calculate the change in length of a 90.5 mm aluminum bar that has increased in temperature by from -14.4 oC to 154.6 oC
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So, the value of total mechanical energy is equal to 0.01 J.

3 0
2 years ago
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