The diagram above illustrates a block ans tackle pulley s...
The diagram above illustrates a block ans tackle pulley system in which an effort E supports a load of 100.0N. If the efficiency of the machine is 75%, calculate the value of E
22.2N
38.0N
67.0N
75.0N
Correct answer is A
Given; VR = 6, e = 75%, MA = ?
e = MAVR×1001
MA =75×610
MA = 92
MA = LE=100E
92=100E
9E = 100
E = 2009
= 22.2N
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