# HW 4 - 1 The coefficient of static friction between Teflon...

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1) The coefficient of static friction between Teflon and scrambled eggs is about 0.035. What is the smallest angle from the horizontal that will cause the eggs to slide across the bottom of a Teflon-coated skillet? 2) In the figure a fastidious worker pushes directly along the handle of a mop with a force F . The handle is at an angle = θ 30.00° with the vertical, and 0.40 and 0.31 are the coefficients of static and kinetic friction between the head of the mop and the floor. Ignore the mass of the handle and assume that all the mop's mass m = 0.30 kg is in its head. If the mop head moves along the floor with a constant velocity, then what is F ?

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is less than a certain value θ θ 0 , then F (still directed along the handle) is unable to move the mop head. Find θ 0 . 3) A block with mass m = 20.9 kg slides down an inclined plane of slope angle 17.8 ° with a constant velocity. It is then projected up the same plane with an initial speed 1.00 m/s . How far up the incline will the block move before coming to rest?
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## This note was uploaded on 10/24/2011 for the course PHYS 211 at USC.

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HW 4 - 1 The coefficient of static friction between Teflon...

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