If the static friction between two surfaces P and Q is measured to be 50N, then the rolling friction between these two surfaces should most likely to be:
(a) 75N
(b) 45N
(c) 55N
(d) 65N

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Solution

Less than that
i.e.
(b) 45N

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If the static friction between two surfaces P and Q is measured to be 50N, then the rolling friction between these two surfaces should most likely to be: (a) 75N (b) 45N (c) 55N (d) 65N

Less than that i.e. (b) 45N

If the static friction between two surfaces P and Q is measured to be 50N, then the rolling friction between these two surfaces should most likely to be:
(a) 75N
(b) 45N
(c) 55N
(d) 65N

Less than that
i.e.
(b) 45N