Recent content by bioengi12345

Im trying to say that is what i got as the answer but i don't think its right. I haven't made a whole lot of progress here some direction would be very helpful. i have set up 3 equations. sum of f in x ( fp-fs-nB=0, -20+nA=0, -20(5.3m)+fP(5.3)+nB(10.6)=0 ... is any of this looking right? i need...

pulling horizontally away from the wall at the midpoint.

So it would be: Force of pull - Force of static friction - normal force of the wall=0? Then i have 3 unknowns. Sorry I am normally really good at this stuff, the whole idea of equilibrium gets me sometimes.

Anyone have any ideas?

Homework Statement A Ladder weighs 20 Lbs. IT rests against a smooth wall at point B. Theta=45. If you pull the ladder at its midpoint, how much force is needed to make it slide at point A? u=.6. The ladder is 15 ft long, Point b is the top and point A is the bottom. 45 Deg is the bottom angle...