4. It takes 400N for a machine to pull a cart up a 24m inclined plane to a height of 10m. The force of gravity acting on the cart is 335N. Determine the efficiency of the machine to the nearest whole number.
Answer:
Wo = F x d
= 335N x 10m
= 3350J
Wi = F x d
= 400N x 24m
= 9600J
ME = Wo/Wi x 100%
= 3350J/9600J x 100%
= 0.3489
~34.9%
~ 35%
Answer:
Wo = F x d
= 335N x 10m
= 3350J
Wi = F x d
= 400N x 24m
= 9600J
ME = Wo/Wi x 100%
= 3350J/9600J x 100%
= 0.3489
~34.9%
~ 35%
The efficiency of the machine is about 35%.
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