Dynamics Problem (rigid body)

  • Thread starter pconn5
  • Start date
  • #1
9
0
Not really sure if this is where this should be but oh well.

Homework Statement


Image attached.

It is given that:

b = 200 mm
mass = 6 kg

Find the tension in cable A immediately after cord B is cut.


Homework Equations


Moment = I*alpha + m*a*d
F = ma?


The Attempt at a Solution


I tried to do
Moment about A = I*alpha (second part is zero?) , so 9.81*6*.1 = 1/6*6*2*.2^2*alpha

I then solved for alpha.

And plugged it into:
Moment about G(center) = I*alpha, but this is wrong and I don't really understand why to be honest with you. It trips me up when the forces are not perpendicular to the center for some reason.

The final answer is T = 23.5 N.

Thanks.
 

Attachments

  • 6.83.JPG
    6.83.JPG
    2.8 KB · Views: 365

Answers and Replies

Related Threads on Dynamics Problem (rigid body)

Replies
5
Views
121
Replies
0
Views
2K
  • Last Post
Replies
2
Views
4K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
0
Views
2K
  • Last Post
Replies
3
Views
1K
Replies
3
Views
186
Replies
6
Views
2K
  • Last Post
Replies
5
Views
1K
R
Replies
8
Views
2K
Top