- #1
gullyb
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Homework Statement
An 82 kg couch is being pushed with a force of 56 N at an angle of 40 above horizontal. If the coefficient of friction between the couch and the floor is 0.051, what is the acceleration of the couch?
Hello gullyb. Welcome to PF !gullyb said:Homework Statement
An 82 kg couch is being pushed with a force of 56 N at an angle of 40 above horizontal. If the coefficient of friction between the couch and the floor is 0.051, what is the acceleration of the couch?
Homework Equations
The Attempt at a Solution
gullyb said:a force of 56 N at an angle of 40 above horizontal
gullyb said:well this would mean that the acceleration is 0 so there is no acceleration? but i don't think that is right
PhanthomJay said:Why not? What does it mean if the couch is moving but not accelerating?
gullyb said:hmmm it means that its moving at a constant velocity. ooh okay yes that makes sense thank you! :D
haruspex said:Did you see my comment, post #7?
There won't be any vertical displacement provided the upward component is insufficient overcome gravity. But it will reduce the normal force, and hence the friction.gullyb said:i kinda assumed that its moving forward so there won't be any displacement in the verticle direction?
A free body diagram is a visual representation of all the forces acting on an object. It is used to analyze the motion of the object and determine the net force acting on it.
To draw a free body diagram, you first need to identify all the forces acting on the object. Then, draw a simple sketch of the object and represent each force with an arrow, indicating the direction and magnitude of the force.
Some common types of forces represented in a free body diagram include gravity, normal force, tension, friction, and applied force.
A free body diagram helps in problem-solving by providing a visual representation of all the forces acting on an object. This allows you to apply the laws of motion and solve for the unknown variables, such as acceleration or net force.
Yes, a free body diagram can be used for objects at rest. In this case, the net force acting on the object is zero, and the forces acting on the object are balanced. This can be represented by arrows of equal length pointing in opposite directions.