A. inversely
B. they are not
C.directly
D.by half
B. they are not
C.directly
D.by half
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They are directly related C.
The reason is that F = mu * N where F is the friction force, mu is the coefficient of friction and N is the normal reaction.
Unless you alter the surfaces then mu is a constant.
So we get F is proportional to N ( direct) and doubling N doubles F
The reason is that F = mu * N where F is the friction force, mu is the coefficient of friction and N is the normal reaction.
Unless you alter the surfaces then mu is a constant.
So we get F is proportional to N ( direct) and doubling N doubles F
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A