00:01
Draw free body diagram for each block.
00:04
So let's begin with our block one.
00:06
We have our normal force one, our tension one, and mass one times gravity.
00:14
Now for a block two, we have our normal force two, mass two times gravity, our force of kinetic friction, and t1.
00:25
Now for mass three, we just have tension two, our acceleration, and mass 3 times gravity.
00:36
Now for v, determine the acceleration of each block.
00:39
We can apply newton's second laws of motion.
00:43
We have, for our first block, we have tension 1 minus our force of friction is equal to mass 1 times acceleration, and our normal force 1 is mass 1 times gravity.
00:54
For our second block, we have tension 2 minus tension 1 minus our force of friction equal to mass 2 times gravity, for a third block, we have mass three times gravity minus tension 2 is equal to mass three times acceleration...