Download presentation

Presentation is loading. Please wait.

1
November 8 AP Physics

2
**Each group presents their problem**

Homework: 25, 26,27,28 Each group presents their problem

3
In: If the moon has a mass of × 1022 kg, an orbital speed of km/s an orbital radius of km, What is the gravitational force of the earth moon system?

4
**Objective: To find out about the law of universal gravitation.**

Success criteria: You will be able to solve universal gravitational problems.

5
**Newton’s Law of Universal Gravitation**

7
**Newton’s Law of Universal Gravitation:**

9
Problem: Oscar (mass=65kg) and Olivia (mass=45 kg) sit 2 meters apart in physics class. What is the force of gravitational attraction between them? Does this cause them to drift toward each other?

10
**Gravitational force is a vector**

11
**Anything that spreads out from a point source**

Inverse square laws Anything that spreads out from a point source Gravitational force Electrical force Sound intensity Light intensity Radiation intensity

12
**Inverse square law - gravitation**

13
**Inverse square law – light intensity**

14
Light intensity

15
**Inverse square law - radiation**

17
**Inverse square law – electric force**

18
**Sound spreads out as an inverse square**

19
**For the rest of class: 1-Gravitational problem set**

2-Lab: centripetal force Finish the calculations Analysis Conclusion due at the end of class.

20
Out: If the distance between two point particles is doubled, then the gravitational force between them: Decreases by a factor of 4 Decreases by a factor of 2 Increases by a factor of 2 Increases by a factor of 4 Cannot be determined without knowing the masses.

21
**A rubber stopper goes in a circle with a string of radius 2 meters**

A rubber stopper goes in a circle with a string of radius 2 meters. The string is inclined at 40o from vertical. The stopper has a mass of .3 kg. The string has a tension of 10 N. How fast is the stopper going?

Similar presentations

OK

Topic 6: Fields and Forces 6.1 Gravitational force and field.

Topic 6: Fields and Forces 6.1 Gravitational force and field.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google