Calculate Torque

  • Thread starter halo9909
  • Start date
  • #1
37
0

Homework Statement



Two people are holding up the ends of a 4.55-kg wooden board that is l = 1.90 m long. A m = 5.00-kg box sits on the board, 0.50 m from one end, as shown below. What forces do the two people exert?


Homework Equations



T=F*d

The Attempt at a Solution


4.55*9.8=44.59N
5*9.8=49N
49N+44.59N=93.59N=Total Force

Length(left)=1.4m Length(right)=.5m


I am unsure how do you calculate the force each person exerts, or if I am missing an equation
 

Answers and Replies

  • #2
hage567
Homework Helper
1,509
2
The total force is not just the sum of the weights. If the board is being held up, each person will exert a force on the board in the upwards direction. So you have four forces to sum up, not two. You also need to sum up the torques by picking one point to be your pivot point (it would be convenient to pick one of the points where a person is holding the board). This will give you two equations to work with.
 

Related Threads on Calculate Torque

  • Last Post
2
Replies
41
Views
5K
  • Last Post
Replies
1
Views
490
  • Last Post
2
Replies
27
Views
2K
  • Last Post
Replies
5
Views
3K
Replies
4
Views
456
Replies
2
Views
2K
  • Last Post
Replies
4
Views
2K
Replies
15
Views
3K
  • Last Post
Replies
4
Views
237
  • Last Post
Replies
1
Views
3K
Top