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A painter is applying force himself to raise him and the box with an acceleration of `5(m)/(s^2)` by a massless rope and pulley arrangement as shown in figure. Mass of painter is 100 kg and that of box is 50 kg. If `g=10(m)/(s^2)`, then:A. tension in the rope is `1125 N`B. tension in the rope is `2250 N`C. force of contact between the painter and the floor is `375 N`D. None of these |
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Answer» Correct Answer - A::C For painter `R + T - mg = ma` ltbRgt `r + t = m(g + a)`….(1) For the system , `2T - (m + M)g - (m + M)a` `2T = (m+M)(g+a)….(2)` where, `m = 100 kg` `M = 50 kg` `a = 5 m//sec ^(2)` `:. T = (150 xx 15)/(2) = 1125 N` and , `R = 375 N`. |
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