A. The efficiency of the ramp is 54.6 %.
Velocity ratio of the ramp
V.R = distance moved by effort/distance moved by load = L/h
V.R = (6.12)/(1.53) = 4
Mechanical advantage of the ramp
M.A = Load/Effort
M.A = (451 x 9.8)/(2025)
M.A = 2.183
Efficiency of the ramp
E = (M.A / V.R) x 100%
E = (2.183 / 4) x 100%
E = 54.6 %
Thus, the efficiency of the ramp is 54.6 %.
Learn more about efficiency here: https://brainly.com/question/15418098
#SPJ1
