Question

A block of mass m=5.2kg is acted on by a force of magnitude F, as shown...

A block of mass m=5.2kg is acted on by a force of magnitude F, as shown in the figure. The force makes an angle θ=230 with the horizontal. The coefficients of kinetic and static frictions between the surface and the block are µk=0.23 and µs=0.18, respectively. What is F  is the block moves with constant speed?

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Homework Answers

Answer #1

Solution-

Use the figure and find the FBD,

To move it with constant speed the horizontal force should be greater and equal to the kinetic friction force,

substitute uk=0.23 m=5.2

Therefore, force should be greater than 109  N.

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