Trying to find how much work is done by friction

  • Thread starter Thread starter fvjjk
  • Start date Start date
  • Tags Tags
    Friction Work
Click For Summary
SUMMARY

The discussion focuses on calculating the work done by friction when a man drags a table 4.05 meters with a constant force of 51.0 N at an angle of 25.0° above the horizontal. The key equation used is work = force × distance × sin(θ), where θ is the angle of the applied force. The participants clarify that the mass of the table is not necessary for this calculation, as the frictional force can be derived from the applied force and the angle. The conclusion emphasizes that understanding the relationship between force, distance, and angle is crucial for solving such physics problems.

PREREQUISITES
  • Understanding of basic physics concepts, specifically work and energy
  • Familiarity with the equations of motion and force analysis
  • Knowledge of friction and its coefficient
  • Ability to apply trigonometric functions in physics problems
NEXT STEPS
  • Study the concept of work done by friction in physics
  • Learn how to calculate the coefficient of friction using different methods
  • Explore the application of trigonometric functions in force analysis
  • Investigate the relationship between applied force, angle, and frictional force
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of work and friction in mechanics.

fvjjk
Messages
1
Reaction score
0

Homework Statement


A man drags a table 4.05 m across the floor, exerting a constant force of 51.0 N, directed 25.0° above the horizontal.

How much work is done by friction? Assume the table's velocity is constant.

Homework Equations


work= umgxsin[tex]\vartheta[/tex]
f=uF

The Attempt at a Solution


I don't understand how I am supposed to find the coefficient of friction without knowing what the mass is.
 
Physics news on Phys.org
E=F*x
Energy=Force*distance

The Force and distance need to be parallel and that is where the 25'deg angle comes into play.

No need for mass, as people are fat enough.

Have fun!
 

Similar threads

  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 28 ·
Replies
28
Views
2K
Replies
29
Views
3K
Replies
18
Views
3K
Replies
4
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 9 ·
Replies
9
Views
3K
Replies
14
Views
4K
  • · Replies 3 ·
Replies
3
Views
3K