A. 0.4cms−1
B. 2.5cms−1
C. 10.0cms−1
D. 10.8cms−1

Correct Answer:

Option A = 0.4cms−1

SEE ALSO  The velocity ratio and efficiency of a system of pulleys are 6 and 80% respectively. How much effort is required to lift a load of mass 120kg with this system? (g=10ms−²)

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