Recent content by DJWise

Difficult Force Problem with changing angle (please help!) 1. A force F is applied to a crate of mass m on a floor where it has a coefficeint of static friction . Angle theta is intially 0 degrees but is gradually increased so that the force vector rotates clockwise in the figure. During the...

Friction up a slope (HELP!) 1. A sled weighing 80N rests ona plane inclines at angle 20 degrees to the horizontal. Between the sled and the plane, the coefficient of static friction is .25 and of kinetic friction is .15. A.) what is the least magnitude of the force F parrallel to the flane...

1. A slab of mass 40 kg rest on a frictionless floor, and a block of mass 10kg rest on top of the slab. Between block and slab, the coefficient of static friction is 0.6, and the coefficient for kinetic friction is 0.4. The block is pulled by a horizontal force (to the right) of magnitude...