Recent content by grinman

-t+60?

So T+60=6a and T-40=4a, was I right about the simultaneous eq'n?

Anybody still online who can help me out?

So we'd end up with T-60g=60a and T-40g=40a? I tried making a simultaneous equation here and ended up with T=240a and a=2 for the 40kg mass, is this good to go or did I miss the boat? Also, shouldn't it be 4kg and 6kg instead of 40 and 60 (unless there was a reason that i missed)

So the tension is going to reduce the resultant force that causes the acceleration. I still can't see how I get the f=ma to work here though, T-40g=40a still leaves me with tension and acceleration unsolved :S What did I miss

Ah, right. I can't remember covering tension in my Physics class yet, though I seem to make a connection with a formula including change in length and original length, I'm not sure though.

Damn, I thought I was on to something there. I really have no idea about the other force now, it's probably something really basic that I passed over

Hmm, so I was thinking that the other force would be the 6kg weight pulling downwards at 60N, do I take the leftover 20N and put that into f=ma?

Ok, so I started with the 4kg weight and got a 40N force as gravity, or am I doing something wrong here

Ok, now I have the mass, but not the acceleration or the force. Is this where I use gravity?

I see 3 options 1. Use suvat 2. Final V - Initial V/Total time (I don't know any velocities) 3. Drop AS PhysicsI'm lost

Homework Statement The 4kg weight is released when the question begins Homework Equations kE = 1/2mv^2 The Attempt at a Solution Had a go using SUVAT equations and came up with a velocity of around 22ms ready to put into the kE formula, then realized I hadn't done anything with...