Download presentation

Presentation is loading. Please wait.

Published byOwen Gardner Modified over 3 years ago

1
September 24 AP physics

2
Exam retake…

3
October 1 In: A 20 kg box is pushed 10 meters across a floor with a coefficient of friction of.5 with a force of 3000 N? How fast is it going at the end?

4
Objective: What is work? SC: Be able to solve work problems

5
Types of Energy: Work

6
Work

7
Notes: Work=force x distance Force and distance must be in the same direction

8
Problem: A windmill pumps 200 kg of water a distance of 10 meters high. How much work did it do?

9
Problem: A boy picks up a 10 kg box 1 meter and carries it 20 meters to a shelf. The shelf is 2 meters high. After he puts it on the shelf, how much work did he do?

10
Problem: The same boy picked up the same box 2 meters, carried it 10 meters across a room and the put it on the 2 meter shelf. How much work was done?

11
Problem: The same boy picked up the same box 2 meters, carried it 40 meters across a room and then lowered it down and put it on a 1 meter shelf. How much work was done?

12
problem: A 10 kg box is pushed up a ramp with a incline of 30 o to a height of 10 meters. The distance up the ramp was 20 meters. What was the work done? 10 m 20 m

13
problem: A 10 kg box is picked up and set at the top the ramp, 10 meters high. What was the work done? 10 m 20 m

14
Problem: A suitcase is pushed at an angle of 30 o from the horizontal with a force of 10 N for a distance of 30 meters. How much work was done?

15
Turn to your neighbor Summarize what you have learned about work

16
Out: An excavator picks up a 1000 kg piece of conduit 5 meters high. How much work was done?

Similar presentations

OK

Work and Energy. Work a force that causes a displacement of an object does work on the object W = Fdnewtons times meters (N·m) or joules (J)

Work and Energy. Work a force that causes a displacement of an object does work on the object W = Fdnewtons times meters (N·m) or joules (J)

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google