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

univerkov | December 8, 2020 | education

The movable block gives a gain in strength 2 times (F1 = 2 * F2), therefore
h1 F1 = F2 2 * h2, whence h2 = 2 * h1
we are given h1 = 1.5 m
means h2 = 2 * 1.5 m = 3 m
Answer: h2 = 3 m

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