Calculating Tension and Friction in Newton's Second Law Problems

AI Thread Summary
The discussion focuses on calculating tension and friction in a physics problem involving Newton's Second Law. It raises questions about the presence of frictional forces on a cart and a mass, and whether the length of a bar is relevant to the calculations. The acceleration of the cart at 2 m/s² indicates that net forces, including any friction, are contributing to this acceleration. Additionally, it confirms that tension in the bar is essential for accelerating the particle and preventing it from falling. Understanding these forces is crucial for solving the problem accurately.
TheRedDevil18
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Homework Statement



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Homework Equations

The Attempt at a Solution



I'm not sure if their are frictional forces on the cart and the mass m. Also do I have to somehow get the length of the bar involved ?, not sure how to do that. Also is their a tension acting on the bar ?
 
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It really does not matter if there are frictional forces on the cart since we have been told that it is accelerating at 2 m/s^2. This must mean that the net force, including frictional forces, gives it that acceleration.

Yes, there will be a tension in the bar - the tension will be necessary to accelerate the particle and keep it from falling.
 
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