- #1
oreosama
- 51
- 0
I'm asking purely in general,
say you have two boxes stacked, if you push on the bottom one, is the top being moved forward by a friction? If this is true it implies an opposite friction on the top of the bottom box?
http://i.imgur.com/7Dya1.png
Is this "balanced" properly? If not help me fix my understanding!
Assuming the above is all good, I have a question from my homework here. same situation as above but with a rope tied to wall on top block
http://i.imgur.com/v1CgQ.png
I applied the forces the same I did before, is this correct?(it seems to make sense, T cancels out top friction meaning it doesn't move, more resistance to pull top block due to two friction forces acting on it.)
Thanks for any confirmation and help
And assuming I've gotten all of that, here's a problem
block a of mass m sits atop another block of mass 3m. block a is tied to a rope with the other end tied to a wall the coeefcient of kinetic friction between each surface is uk. the bottom block is pulled to the left with force F
given m, uk determine force F necessary to move the bottom block at constant speed
F = 4*uk*mg
say you have two boxes stacked, if you push on the bottom one, is the top being moved forward by a friction? If this is true it implies an opposite friction on the top of the bottom box?
http://i.imgur.com/7Dya1.png
Is this "balanced" properly? If not help me fix my understanding!
Assuming the above is all good, I have a question from my homework here. same situation as above but with a rope tied to wall on top block
http://i.imgur.com/v1CgQ.png
I applied the forces the same I did before, is this correct?(it seems to make sense, T cancels out top friction meaning it doesn't move, more resistance to pull top block due to two friction forces acting on it.)
Thanks for any confirmation and help
And assuming I've gotten all of that, here's a problem
block a of mass m sits atop another block of mass 3m. block a is tied to a rope with the other end tied to a wall the coeefcient of kinetic friction between each surface is uk. the bottom block is pulled to the left with force F
given m, uk determine force F necessary to move the bottom block at constant speed
F = 4*uk*mg