Recent content by jasonpeng

could you also explain the equations 1 and 2 relating Ax with alpha?

and how about the translational acceleration? how do the normal forces act on that? and also, isn't alpha also an unknown variable?

coudl you explain how you got the m(l^2/12)alpha part?

Yes, I've learned precalculus so I do know my angular things.

Is there a way that the problem can be solved without calculus?

No, I have not. I'm in 10th grade at the moment. this problem showed up in a book I bought for high school physics so I could learn it on my own time

scratch that, could you lead me through how I would find the acceleration of the center of mass? I'm just confuse over how the center of mass moves translationaly if forces are being applied to the object away from the cetner of mass.

sorry, what's d?

alright, let's go on then. Sorry for the delay by the way, I'm in a summer camp so I'm busy a lot of the time

but for the sliding object: the center of mass is at .5lsin(theta) and .5lcos(theta).

Well I've found some example problems of the exact same question online, and I know HOW to do it, but I don't know why. How come the normal force is larger when it is in equilibrium but less when there is no friction on the ground if it's the same ladder, same gravity, etc.?

not in the questions from the book's tests though. I mean it would make sense in real life if there was extra info, but not from that book's problems

Yep. Would love to. Let me get my pencil and paper

so the normal force is bigger if I add a frictional force sideways?

that's what I'm trying to find out. the Ffriction on the ground. If you mean the leaning wall, it has no friction.