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# Descriptive Physics Homework 2 Instructions: Write your responses to the following questions from chapters 5-8. Each response *must* be comprised of complete sentences only and must form a complete...

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Descriptive Physics Homework 2

Instructions: Write your responses to the following questions from chapters 5-8. Each response *must* be comprised of complete sentences only and must form a complete thought. There is no minimum length requirement.

You *must* cite the source. The format here is loose as in a link or book title or merely saying “from our lecture” will suffice depending on the source. Do *not* plagiarize. Quote sources instead. Rewriting an idea is still stealing an idea and I would rather you quote the source than rewrite the idea.

Point breakdown per question:

2 points for complete sentences/thoughts

2 points for content

1 point for citation of source

Due date: September 30, 2019

1. What is responsible for circular motion? Make sure to discuss centripetal force as well as centripetal acceleration.
2. Which law related to planetary motion is an inverse square law? What does an inverse square law mean?
3. What is potential energy? What are some examples of potential energy and how does an object obtain potential energy? What is an object able to do with potential energy?
4. Describe the concept of conservation of energy making sure to use the term “system” in your definition.
5. What is impulse and how does it relate to momentum?
6. What is an elastic collision and what is conserved during one?
7. What changes about rotational motion vs linear motion? In other words, how are the new terms (rotational position, velocity and acceleration) different from the linear terms and how are they defined mathematically?
8. How is Newton’s Second Law redefined for rotational motion mathematically? Describe what each of the terms mean in this new equation.
Answered Same DaySep 29, 2021

## Solution

Yasodharan answered on Sep 29 2021
What is responsible for circular motion? Make sure to discuss centripetal force as well as centripetal acceleration.
The centre seeking force is responsible for circular motion commonly termed as centripetal force.
The force acting towards the centre of circular path (uniform) where object moves around are termed as centripetal force which plays vital role in keeping the object in circular path, where as the rate of change of velocity in tangential is known as centripetal acceleration as it always moves towards radius of circular motion.
Which law related to planetary motion is an inverse square law? What does an inverse square law mean?
Newton’s universal law of gravitation relates to planetary motion of inverse square law, the magnitude of force varies on separation of particles influenced by inverse square and is expressed in vector form as,
What is potential energy? What are some examples of potential energy and how does an object obtain potential energy? What is an object able to do with potential...
SOLUTION.PDF