An object with a mass of # 4 kg# is lying on a surface and is compressing a horizontal spring by #8 cm#. If the spring's constant is # 6 (kg)/s^2#, what is the minimum value of the surface's coefficient of static friction?

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Answer 1 · 2016-02-19T01:22:23

#=> mu = 48/40 =1.2#

#F =kx #

k = 6N/m x = 8cm

F = `48N

This F = frictional force = f

#f = mu N = mu mg = mu 10 * 4 = 40 mu#

#=> mu = 48/40 =1.2#