Determine the net force acting on a ball as it rolls down a ramp.

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Homework Help Overview

The discussion revolves around determining the net force acting on a ball as it rolls down a ramp, a topic within the context of classical mechanics, specifically focusing on forces and motion on inclined planes.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster expresses confusion about applying the formula F=mg in the context of a ramp and seeks clarification on how to determine the net force. Participants suggest considering a free body diagram (FBD) to identify the relevant forces acting on the ball.

Discussion Status

Participants are actively engaging in the problem, with one suggesting the use of a free body diagram to analyze the forces involved. The original poster has attempted to draw the diagram and calculate the net force, inviting others to verify their findings.

Contextual Notes

The problem includes specific measurements such as mass, height of the ramp, and time taken for the ball to roll down, which may influence the calculations and assumptions discussed. There is mention of a coefficient of friction, which is noted as being the closest available from a textbook.

filip3311
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Homework Statement


I am doing a Gr. 11 Physics project and my task is:Determine the net force acting on a ball as it rolls down a ramp.
m= 46.7
d(horizontal of ramp/length)= 92.5cm
h (height of the ramp from floor to tallest point)= 45.0cm
time for ball to roll down= 0.61s

Homework Equations


I am confused on how to determine the net force. I would just use F=mg but because this is a ramp, I am unsure. Please let me know if you can help me at all.
Here is a picture of the experiment:
photo.jpg


The Attempt at a Solution

 
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You'll have to consider a free body diagram(FBD) of the ball on the ramp. Since this is an 11th grade project, you should know the basics of drawing an FBD. Simply draw the ball on an incline, introduce an appropriate coordinate axis, and plot all the relevant forces acting on the ball. There will be gravitational, normal, and friction forces on the ball.
 
Alright sounds good. I'll give it a shot and post back with my solutions.
 
Alright I drew the diagram and got the net force of the ball rolling down the ramp at 220.57N (coefficient of friction was 0.01 (closest i could fin in my textbook.)) If anybody likes physics and would like to do the problem themselves to check if my answer is correct, I'd appreciate it. Good day guys :)
 

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