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3 years ago

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30. A box with mass 20kg is on a cement floor. The coefficient of static friction between the box and floor is 0.25. A man is pu

shing the box with a horizontal force of 35N. What is the magnitude of the force of static friction between the box and floor

1 answer:

Mnenie [13.5K]3 years ago

7 0

Answer:

84.05

Explanation:

F=mg×0.25
F=20x9.81×0.25
f=49.05N
F=35N

F=f+F

F=49.05+35

=84.05

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Answer: The smallest effort = 300N

Explanation:

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3 years ago

Water is flowing in a pipe with a circular cross section but with varying cross-sectional area, and at all points the water comp

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(a) 5.66 m/s

The flow rate of the water in the pipe is given by

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(b) 0.326 m

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and where $A_2$ is the cross-sectional area of the pipe at the second point.

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3 years ago

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$\displaystyle{\int_{x_i}^{x_j}F(x)dx}$

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4 years ago

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DedPeter [7]

Answer:

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3 years ago

Nvm i got the answer but <br> free points

faust18 [17]

Answer:

thank you 谢谢

Explanation:

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3 years ago

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