The diagram above is a block and tackle pulley system in which an effort of 80N is use to lift a load of 240N. The efficiency of the machine is
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Correct Answer: Option B
Explanation:
Since the number of pulleys present is 6, it implies that the velocity ratio VR = 6
V.R
[/table]
= Load/Effort x 1/V.R x 100/1
= 240/80 x 1/6 x 100/1
= 50%
∴ Efficiency = 50%
Since the number of pulleys present is 6, it implies that the velocity ratio VR = 6
| 1 |
[/table]
= Load/Effort x 1/V.R x 100/1
= 240/80 x 1/6 x 100/1
= 50%
∴ Efficiency = 50%