Starting from rest, a 4.20-kg block slides 2.30 m down a rough30.0° incline. The coefficient of kinetic friction between theblock and the incline is μk =0.436.
(a) Determine the work done by the force of gravity.
J
(b) Determine the work done by the friction force between block andincline.
J
(c) Determine the work done by the normal force.
J
(d) Qualitatively, how would the answers change if a shorter rampat a steeper angle were used to span the same vertical height?
