To-paint-the-side-of-a-building-painter-normally-hoists-himself-up-by-pulling-on-the-rope-A-as-in-figure-The-painter-and-platform-together-weigh-200-N-The-rope-B-can-withstand-300-N-Find-the-maxim

Question Number 20346 by Tinkutara last updated on 25/Aug/17

To paint the side of a building, painter

normally hoists himself up by pulling on

the rope A as in figure . The painter and

platform together weigh 200 N . The

rope B can withstand 300 N . Find the

maximum acceleration of the painter .

Commented by Tinkutara last updated on 25/Aug/17

Commented by ajfour last updated on 25/Aug/17

l e t m a s s o f p a i n t e r = M

m a s s o f p l a t f o r m = m

t e n s i o n i n r o p e A = T = \frac{1}{2} T_{B}

T = T_{A} = 150 N

2 T - (M + m) g = (M + m) a

a_{m a x} = \frac{2 T}{(M + m)} - g

= \frac{300}{(200 / g)} - g = \frac{g}{2} .

Commented by Tinkutara last updated on 25/Aug/17

Thank you very much Sir!