Asked by Anonymous
A spring with a force constant of 1.35x10^2 N/m is used to push a 0.270 kg block of wood against a wall, as shown in the figure. Find the minimum compression of the spring needed to keep the block from falling, given that the coefficient of static friction between the block and the wall is 0.410
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Answered by
Anonymous
weight of block = m g = 0.270 * 9.81 = 2.65 Newtons down
we need mu F = 2.85 Newtons up
so F = 2.85 / 0.41 = 6.46 N
6.46 = k x
x = 6.46 N / 135 N/meter = .0478 meter = 4.78 cm
we need mu F = 2.85 Newtons up
so F = 2.85 / 0.41 = 6.46 N
6.46 = k x
x = 6.46 N / 135 N/meter = .0478 meter = 4.78 cm
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