- #1
Daniiel
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Homework Statement
[PLAIN]http://img72.imageshack.us/img72/6052/jdff.jpgThe Attempt at a Solution
For part ii
i found the centre of mass of the ladder by
80x2/80+25 = 1.52m up the ladder
then
force of the wall minus the tension
Fw - T = 0
Fw = (9.8 x (25x0.51 + 80x0.67)) / 2.83 (height of the ladder against the wall)
= 229.76 N
so that's the force on the wall and the tension opposing it
would that be the answer for the tension in the rope?
or would i have to consider the tension doing more work?
like the total force downwards in the y direction?
Mg + mg = 1029 N
or is that just the force the ground is giving?
and I am also not sure how to incorporate the fact that the rope is abit higher than ground level
thanks for help in advanced
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