Is acceleration constant when a disk is rolling down a ramp?

AI Thread Summary
Acceleration is constant when the net force acting on an object is steady, resulting in a uniform change in velocity over time. In the case of a disk rolling down a ramp, the acceleration is not constant due to the influence of gravitational force and friction, which can vary depending on the ramp's angle and surface. Newton's second law explains that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Understanding the relationship between forces, acceleration, and velocity is crucial for analyzing motion. Therefore, the acceleration of a rolling disk changes as it moves down the ramp.
goomer
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I don't understand when acceleration is constant and when it changes. What are some examples of situations where the acceleration is constant and when it's not? Is acceleration constant when a disk is rolling down a ramp?
 
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tell us first how acceleration is related to velocity
 
velocity/time = acceleration
 
more particularly, it's the change in velocity over the change in time. So if you have a constant acceleration, you have a velocity that is changing with a constant rate.

Now, what are the forces on the disk? Do you know Newton's second law?
 

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