With the help of a movable block, the load was lifted to a height of 1.5 m. How long was the free end of the rope pulled?

Given: h = l1 = 1.5 m; g = 10 N / kg Find: 12 -?

We know that the movable block gives a 2-fold gain in cm:

F = P / 2;
l1 / l2 = F / P; l2 = 2l1
l2 = 2 • 1.5 = 3 m Answer: 12 = 3 m



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