Picture attatched. help find tension?

  • #1
physicsgurl12
184
0

Homework Statement



What is the tension T in the string?

Homework Equations



Is their an equation for tension. not in my book?

The Attempt at a Solution


im soo lost.
 

Attachments

  • Tension problem.png
    Tension problem.png
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Answers and Replies

  • #2
flyingpig
2,580
1
Start with a Free Body Diagram

The only formula you will ever need is F = ma, and some trig skills
 
  • #3
physicsgurl12
184
0
i think the forces are gravity, tension and frictional.
 
  • #4
physicsgurl12
184
0
wait no there's surface
 
  • #5
flyingpig
2,580
1
i think the forces are gravity, tension and frictional.

What do you mean you "think" there is friction? That's actually important...
 
  • #6
physicsgurl12
184
0
um because its touching the surface
 
  • #7
flyingpig
2,580
1
um because its touching the surface

Does the problem state there is friction? We don't want to add anything we don't want
 
  • #8
physicsgurl12
184
0
it says " the coefficients of kinetic friction and static friction between the left hand box and the plane are .15 and .30"
 
  • #9
flyingpig
2,580
1
it says " the coefficients of kinetic friction and static friction between the left hand box and the plane are .15 and .30"

Wellllllllll wouldn't that be great if you told us that from the start?

You still haven't provided us a Free Body Diagram. It's good you know what forces are present, but what forces are acting on each body?
 
  • #10
physicsgurl12
184
0
heres my force diagram.
 

Attachments

  • force diagram.png
    force diagram.png
    5.9 KB · Views: 367

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