Torque Problem not yielding answer choices

  • Thread starter Thread starter fireman2020
  • Start date Start date
  • Tags Tags
    Choices Torque
Click For Summary
SUMMARY

The discussion focuses on the calculation of torque in a physics problem involving a pivot point and gravitational force. The user initially calculated torque using the equation T=Ia=0=L*T*sin(180-θ)+(L/2)*F g *sin(θ) but encountered an issue with the answer choices. A key insight was provided regarding the correct construction of the trigonometric function for gravitational torque, emphasizing the importance of accurately drawing angles and parallel lines in the problem setup.

PREREQUISITES
  • Understanding of torque and its calculation in physics.
  • Familiarity with trigonometric functions and their application in physics problems.
  • Knowledge of gravitational force and its representation in equations.
  • Ability to visualize and draw free-body diagrams accurately.
NEXT STEPS
  • Study the principles of torque calculation in static equilibrium problems.
  • Learn about the correct application of trigonometric functions in physics.
  • Review free-body diagram techniques for better visualization of forces.
  • Explore common pitfalls in torque problems and how to avoid them.
USEFUL FOR

Students studying physics, educators teaching mechanics, and anyone seeking to improve their problem-solving skills in torque-related scenarios.

fireman2020
Messages
4
Reaction score
1
E0Nw30f.jpg

The Attempt at a Solution



I took the pivot point to be the hinge point and calculated the torque to the force of gravity as well as tension. So

T=Ia=0=L*T*sin(180-θ)+(L/2)*F g *sin(θ) which yields

T+(1/2)F g=0 so shouldn't T=mg/2? However, this is not an answer choice.[/B]
 
Physics news on Phys.org
Hello. Welcome to PF!

Be careful with constructing the trig function for the torque of Fg.
 
  • Like
Likes   Reactions: berkeman and fireman2020
TSny said:
Hello. Welcome to PF!

Be careful with constructing the trig function for the torque of Fg.

Wow thank you, I should have been more organized with how I drew my angles and parallel lines. I see it now.
 
  • Like
Likes   Reactions: berkeman

Similar threads

  • · Replies 17 ·
Replies
17
Views
1K
  • · Replies 42 ·
2
Replies
42
Views
4K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 29 ·
Replies
29
Views
3K
  • · Replies 26 ·
Replies
26
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 10 ·
Replies
10
Views
6K
Replies
3
Views
3K
Replies
30
Views
4K