Rotational Equilibrium Homework Help

Click For Summary
SUMMARY

The discussion focuses on solving a rotational equilibrium problem involving forces and torques. The key values provided are F = 2.91 N, Ft1 = 13.32 N, and Ft2 = 3.36 N. The equations used include the force balance equations for both x and y components, as well as the torque equation. Participants emphasized the importance of correctly identifying the angle and distances in the torque calculations to achieve accurate results.

PREREQUISITES
  • Understanding of rotational equilibrium concepts
  • Familiarity with torque calculations
  • Knowledge of trigonometric functions in physics
  • Ability to solve simultaneous equations
NEXT STEPS
  • Review the principles of rotational equilibrium in physics
  • Learn how to calculate torque using the formula τ = r × F
  • Study the application of trigonometric functions in force resolution
  • Practice solving problems involving multiple forces and angles
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and rotational dynamics, as well as educators looking for problem-solving strategies in rotational equilibrium scenarios.

Repolar
Messages
1
Reaction score
0

Homework Statement



23iyln5.jpg

Answers were told to us to be

F = 2.91 N
Ft1 = 13.32 N
Ft2 = 3.36 N

Homework Equations



Fx = Ft2 cos(θ) - F = 0
Fy = Ft2 sin(θ) + Ft1 - Fg = 0
Torque equation

-FgDg - Ft2D1x cos(θ) + Ft2D1y sin(θ) = 0

The Attempt at a Solution



I plugged in all of the information i had but did not get the right answer. I think my distances may be off but i cannot seem to get to those answers.
 
Last edited:
Physics news on Phys.org
Repolar said:
-FgDg - Ft2D1x cos(θ) + Ft2D1y sin(θ) = 0
That doesn't look right. The angle is to the horizontal, so cos(theta) should be giving a horizontal force component. That needs to be multiplied by a vertical distance. Pls post your working in detail.
 
why not calculate torque from the nail then rotation is 0 and the picture can only rotate along the nail then FT1 being parallel to the line of action offers no torque only mg is balanced by FT2 the by that u can find the others
 

Similar threads

  • · Replies 8 ·
Replies
8
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
3
Views
3K
  • · Replies 1 ·
Replies
1
Views
6K
  • · Replies 4 ·
Replies
4
Views
1K
Replies
6
Views
3K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 18 ·
Replies
18
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 11 ·
Replies
11
Views
4K