Calculating Tension and Friction in Newton's Second Law Problems

In summary, the conversation discusses whether there are frictional forces on the cart and mass and if the length of the bar needs to be considered. It is determined that the acceleration of 2 m/s^2 means the net force, including frictional forces, contributes to this acceleration. It is also mentioned that there will be a tension in the bar to keep the particle from falling.
  • #1
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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  • #2
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.
 

1. What is Newton's Second Law of Motion?

Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

2. How is force defined?

Force is defined as any influence that causes an object to undergo a change in motion. It is measured in Newtons (N) and is calculated by multiplying mass (in kilograms) by acceleration (in meters per second squared).

3. How do you calculate acceleration using Newton's Second Law?

To calculate acceleration using Newton's Second Law, you divide the net force acting on an object by its mass. The formula is a = F/m, where a is acceleration, F is net force, and m is mass.

4. Can Newton's Second Law be applied to both linear and rotational motion?

Yes, Newton's Second Law can be applied to both linear and rotational motion. In rotational motion, the net torque acting on an object is equal to the moment of inertia times the angular acceleration.

5. What is the difference between mass and weight?

Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity acting on an object. Mass is constant, but weight can vary depending on the strength of the gravitational force.

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