Posted by T.J. on .
A clerk moves a box of cans down an aisle by pulling on a strap attached to the box. The clerk pulls with a force of 188.0 N at an angle of 26° with the horizontal. The box has a mass of 30 kg, and the coefficient of kinetic friction between the box and the floor is 0.45. Find the acceleration of the box.
in m/s2 down the aisle

Physics 
bobpursley,
remember the horizontal component of his pulling is the pulling force
hte upward component of his pulling just reduces the normal force, thence reduces friction.
net force=ma
horizontal forcemu*normalforce=ma
solve for a.