force down on floor = m g - F sin 30 = m g - 0.5 F
friction force = 0.75 ( 35 * 9.81 - 0.5 F) = F cos 30
solve for F
A concrete block of mass 35kg is pulled along a horizontal floor with the aid of a
rope inclined at an angle of 30° to the horizontal. If the coefficient of friction is 0.75
calculate the force required to move the block over the floor.
1 answer