Question

Sally applies a total force of 299 N with a
rope to drag a wooden crate of mass 100 kg
across a floor with a constant acceleration in
the x-direction of a = 0.1 m/s
2
. The rope tied
to the crate is pulled at an angle of θ = 59
◦
relative to the floor.
m
Calculate the total work done by friction as
the block moves a distance 21.8 m over the
horizontal surface. The acceleration due to
gravity is 9.8 m/s
2
.
Answer in units of J