How Do Friction and Normal Force Act on a Rod at an Angle?

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SUMMARY

The discussion focuses on analyzing the forces acting on a rod of mass m, positioned at a 60-degree angle to the ground, immediately after being released from rest. The key forces involved are the normal force and frictional force, which prevent the rod from sliding. The participant has calculated the force components along and perpendicular to the rod but struggles with the vertical force balance due to motion in the y-axis. A free-body diagram is essential for visualizing these forces and determining the normal reaction and frictional force accurately.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Knowledge of free-body diagrams
  • Basic trigonometry for resolving forces
  • Concept of static friction and its role in preventing motion
NEXT STEPS
  • Study the principles of static equilibrium in physics
  • Learn how to draw and interpret free-body diagrams
  • Explore the relationship between normal force and frictional force
  • Investigate the dynamics of objects on inclined planes
USEFUL FOR

Students studying physics, particularly those focusing on mechanics, as well as educators seeking to enhance their understanding of force interactions in static and dynamic scenarios.

nil1996
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Homework Statement


Here is a rod of mass m(as shown in figure)which is released from rest.The angle made by the rod with the ground is 600. Assume that the force of friction is enough to prevent sliding of the rod.Find the normal reaction and the frictional force just after the rod is released.
http://img138.imageshack.us/img138/1282/xvug.png


Homework Equations



none

The Attempt at a Solution


I have calculated the components of the forces on the axis-one along the rod and other perpendicular to the rod.I have used ƩFx=0(as there is no motion in the direction along the rod-if i am correct). But i am not able to compute ƩFy as there is motion in y axis.I am confused please help.
 
Last edited by a moderator:
Physics news on Phys.org
Did you draw a free-body diagram for the rod?
If there were no friction, what would the motion of point A be?
What would be the reaction force there?
 

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