The ladder, together with the person on it, is balanced by a counterweight on a rope thrown over a block. The mass m of the person is equal to the mass of the ladder, and the mass and friction of the block can be neglected. At what height H above the ground will a person be if he climbs the stairs n rungs up (a = 6)? The distance between the crossbars is l = 40 cm. Initially, the person was on the lower crossbar at a height of h = 2 m above the ground. We can assume that when climbing onto each crossbar, a person moves uniformly accelerated.

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