(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

a box weighing 77N rest on a table. a rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end. determine the force that the table everts on the box if the weight hanging on the other side of the pulley weighs 30N.

(box in on the left n weight on the right hand side of the pulley)

2. Relevant equations

box

F=mg-T

ma=mg-T

weight

F=T-mg

ma=T-mg

3. The attempt at a solution

i let

T of box= T of weight

mg-ma=ma-mg

2ma=30N + 77N

ma=107N / 2

F=53.5N

(i think i am missing something in the equation)

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# Homework Help: Pulley HELP

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