The fiqure below represents a block-and-tackle pulley system on which an effort of W Newtons...
PHYSICS
JAMB 2020
The fiqure below represents a block-and-tackle pulley system on which an effort of W Newtons supports a load of 120.0N. If the efficiency of the machine is 40, then the value of W is
- A. 28.0N
- B. 48.0N
- C. 288.0N
- D. 50.0N
Correct Answer: D. 50.0N
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