Homework Help: PHYSICS

Posted by HANNE on Thursday, October 11, 2012 at 11:35am.

A factory worker pushes a 30.7 crate a distance of 4.0 along a level floor at constant velocity by pushing downward at an angle of 31 below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.26.

What magnitude of force must the worker apply to move the crate at constant velocity?

PHYSICS - bobpursley, Thursday, October 11, 2012 at 11:58am
downward? that means he is increasing friction.

Friction force=mu(mg+Force*Sin31)

horizontal force=force*cos31

set them equal, solve for force.
PHYSICS - Mr. Balls, Friday, November 2, 2012 at 7:38pm
balls
PHYSICS - Anonymous, Tuesday, November 6, 2012 at 6:01pm
jhh
PHYSICS - pu$$yslayer, Sunday, March 3, 2013 at 10:03pm
how is p u s s y a bad word?
PHYSICS - KB, Tuesday, April 2, 2013 at 3:52pm
bob is correct, except that you have to subtract the Force*sin(31). It's a poorly worded problem, to say the least.

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