Torque Question

  • #1

Homework Statement


A ladder 12.0m long weighing 125 N rest against a smooth vertical wall. The bottom of the ladder makes an angel of 67 with the deck. A bucket of paint with a mass of 14kg rests o a rung, 7.00m from the bottom end of the ladder. What is the frictional force exerted on the bottom of the ladder?


Homework Equations


T= F x R x Cos theta

The Attempt at a Solution



Sum of forces x: Nw- fs=0
Sum of forces y= Ng- Fg=0
Sum of torques: Tnw- Tfg=0

Do I have these equations correct? I don't know which angles and lengths get plugged into which? Can someone please help me?
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,832
251
Hi Power of One! :wink:

First find the normal force.

Then take moments to find the friction force. :smile:
 

Related Threads on Torque Question

  • Last Post
Replies
2
Views
537
  • Last Post
Replies
10
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
1
Views
895
  • Last Post
Replies
12
Views
2K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
6
Views
1K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
3
Views
8K
Top