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A container of PS5s with a mass of 451kg is loaded onto a Walmart truck using a ramp. The ramp is 6.12m long and
the bed of the truck is 1.53m above the ground. A force of 2025N applied parallel to the ramp moves the precious
consoles at a constant speed up the ramp. Find the efficiency of the ramp.
a) 32%
Ob) 54.65 %
O c) 46.4%
d) 54.6 %

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onyebuchinnaji

D. 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 %.

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