The angle of inclination is calculated using sin
function,
sin θ = 5 m / 20 m = 0.25
θ = 14.4775°
The net force exerted is then calculated:
F net = m g sin θ = 20 * 9.8 * 0.25
F net = 49N
Work is product of net force and distance:
W = F net * d = 49 * 20
Work = 980 J
