Download presentation

Presentation is loading. Please wait.

1
November 2 AP Physics

2
Momentum Test return

3
In: What makes objects move in a circle?

4
**Objective: To begin our study of circular motion. Success criteria:**

Discover the variables of centripetal force, and be able to do centripetal force and acceleration problems.

6
**Discovery Lab: Circular motion**

Using the circular motion device, discover everything you can about circular motion. List your discoveries:

7
What did we find out?

8
**Period (T) is the time it takes to go around once. **

Frequency ( f ) the number of times it goes around in one second T=1/ f

9
**Centripetal acceleration**

Always toward the center ac= v2 r

10
**“Center seeking” force**

Centripetal force: “Center seeking” force Fc= mv2 r

11
**V=d/t Distance = 2πr Time=T (period) So……. V= 2πr T**

Tangential Speed V=d/t Distance = 2πr Time=T (period) So……. V= 2πr T

14
Problem A 2.1 m rope attaches a tire to an overhanging tree limb. A girl swinging on the tire has a tangential speed of 2.5 m/s. If the magnitude of the centripetal force is 88 N, what is the girl’s mass?

15
**A bicyclist is riding at a tangential speed of 13**

A bicyclist is riding at a tangential speed of 13.2 m/s around a circular track. The magnitude of the centripetal force is 377N, and the combined mass of the bicycle and rider is 86.5 kg. What is the track’s radius?

16
A dog sits 1.5 m from the center of a merry-go round and revolves at a tangential speed of 1.8 m/s. If the dog’s mas is 18.5 kg, what is the magnitude of the centripetal force on the dog?

17
**A 905 kg car travels around a circular track with a circumference of 3**

A 905 kg car travels around a circular track with a circumference of 3.25 km. If the magnitude of the centripetal force is 2140 N, what is the car’s tangential speed?

18
Practice Problems:

19
**What makes objects move in a circle?**

Out: What makes objects move in a circle?

Similar presentations

OK

CIRCULAR MOTION. WHAT IS UNIFORM CIRCULAR MOTION The motion of an object in a circle at constant speed. However, direction and therefore velocity are.

CIRCULAR MOTION. WHAT IS UNIFORM CIRCULAR MOTION The motion of an object in a circle at constant speed. However, direction and therefore velocity are.

© 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

Ppt on health effects of air pollution in delhi Ppt on project management process Ppt on layer 3 switching wiki Ppt on data handling for class 7th math Ppt on limits and derivatives ppt Ppt on 3d figures Ppt on mauryan period Ppt on food trucks Download ppt on biodiversity in india Ppt on financial inclusion in india