Pully Problem, Force/Tension

  • Thread starter koomba
  • Start date
  • #1
9
0
Ok I've been working on this problem for a while, and I'm kinda new to physics, so bear with me. So here it is:

Heres the picture of the problem:

prob68_Atwood1.gif



A frictionless pulley with zero mass is attached to the ceiling, in a gravity field of 9.81 m/s2. Mass M2=0.150 kg is being accelerated downward with a=1.10 m/s2. Calculate the mass m1.

Just assume there is no compression/stretching of the rope on this problem. ALso, I guess the acceleration of M1 would be -1.10 m/s^2, correct? Beyond this I'm really confused. Any help would be greatly appreciated! Thanks.

Steven
 

Answers and Replies

  • #2
133
4
I suspect a/g = (M2- M1) / (M2 + M1). Then (M2 + M1) a/g = M2 - M1 . and
M1 a/g + M1 = M2 -M2 a/g so M1 = M2 (1-a/g)/(1+a/g) .
 
  • #3
9
0
I'll see what kind of numbers I get with that, thanks!

Edit: Hey looks like that worked out, thanks man! :biggrin:
 
Last edited:

Related Threads on Pully Problem, Force/Tension

  • Last Post
Replies
4
Views
6K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
2
Views
810
  • Last Post
Replies
10
Views
1K
  • Last Post
Replies
3
Views
714
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
4
Views
8K
Top