Unit 5 Power.

Slides:



Advertisements
Similar presentations
Chapter 10: Work, Energy, and Simple Machines
Advertisements

Chapter 7: Work (Ewen et al. 2005) Objectives: Define power and solve power problems Define power and solve power problems.
Work Work = Force x Distance The force must be in the direction
Work, Energy and Power Chapter 5 Section 4. Wagon Example Push a wagon on a sidewalk and it starts to roll down the sidewalk. Push a wagon on a sidewalk.
Chapter 5 Work and Machines.
As a store manager, would you prefer to hire a clerk who could unload a truck in one hour, or a second clerk that could unload a truck in half an hour?
Section 5-1. Work – Section 5-1 Definition of Work Ordinary Definition : To us, WORK means to do something that takes physical or mental effort. ◦ Ex:
Chapter 5 Work and Energy
Chapter 7 Work and Kinetic Energy. Units of Chapter 7 Work Done by a Constant Force Kinetic Energy and the Work-Energy Theorem Work Done by a Variable.
Power.
Notes on Chapter 8 Work & Energy
Work & Power.
Chapter 5 – Work and Energy If an object is moved by a force and the force and displacement are in the same direction, then work equals the product of.
When we say something is conserved, we mean it remains constant.
Ch. 5 Work and Energy. 5-1 Work W = F X d W net = F net d(cos θ) Work (J) Force (N) distance (m) Work is NOT done on an object unless it moves.
Work What is work? Is the product of force and distance. When a force acts on an object in the direction the object moves. Some of the force has to cause.
Chapter 6 Section 1 Work and Machines. Define work: __________________________________________ What 2 conditions apply to work? 1.________________________________________.
5.5 Power It takes time to change one form of energy into another. Physicists use the word power (P) to describe the rate at which energy is transformed,
Chapter 14 Work, Power and Simple Machines Do work, son!
Work, Kinetic Energy, and Power. v f 2 = v i 2 + 2ad and F = ma v f 2 -v i 2 = 2ad and F/m = a v f 2 -v i 2 = 2(F/m)d Fd = ½ mv f 2 – ½ mv i 2 Fd = Work.
Work & Energy Chapters 7-8 Work Potential Energy Kinetic Energy Conservation of Mechanical Energy.
Work and Power. WORK We now know that forces transfer energy. This process of energy transfer is called WORK. Work measures the effects of a force acting.
Work, Energy, and Power What are the forms of energy? Heat Chemical Nuclear Light(Solar) Mechanical Electromagnetic Energy.
Lesson 5.4 Power Essential Question: How do you calculate power?
Section 5–4: Power Physics Coach Kelsoe Pages 179 – 181.
Work has a specific definition in physics
SPS8.e. Calculate amounts of work and mechanical advantage using simple machines.
Work & Power Mr. Skirbst Physical Science Topic 05.
The Quadratic Formula Chapter 8.6. The Quadratic Formula If, then.
Energy Part 6 - Power.
POWER The rate at which work is done The rate at which work is done The amount of work done in a unit of time The amount of work done in a unit of time.
Work, Power, and Simple Machines
Power. Rate of Energy Transfer  Power is a quantity that measures the rate at which work is done or energy is transformed. P = W / ∆t power = work ÷
Horses have it… Mechanical Power. power: the rate at which… –WORK IS DONE –ENERGY IS PRODUCED OR CONSUMED –unit: WATT Definitions Equation.
Chapter 5 Power 1. Power is the rate at which work is done. More generally, power is the rate of energy transferred by any method. 2.
Section 14 Work, Power, and Energy. More Power!!!!! What does he mean?
Power, by definition, is the rate of doing work; or the rate at which energy is transferred. P = W / tP = W / tP = W / tP = W / t Power is a scalar.
Work and Power Chapter 13.1 Notes. What is work? Work is done only when force is applied to an object AND the object moves in the same direction as the.
Warm Up For a pendulum in motion, when does it have the most potential energy? Kinetic energy? How are these maximums related? For a pendulum in motion,
Chapter 5: Work and Machines.  Compare the effort exerted by a backpacker moving over level ground to that exerted by a backpacker moving uphill.  How.
Physics Section 5.4 Define “power” Power- is the rate at which work is done or energy is transformed. P = W ∆t P = power (watts) W = work (J) t = time.
2.2 Basic Differentiation Rules and Rate of Change
Power.
Measuring Energy and power
WORK, POWER, & EFFICIENCY
What Is Work? Chapter 12 Section 1.
Physical Science Unit 3-5
Using machines.
Bell Ringer What does the word work mean to you?
Lecture Outline Chapter 7 Physics, 4th Edition James S. Walker
WORK, POWER AND ENERGY! (ACCORDING TO PHYSICS)
Basic Differentiation Rules
Work, power, and machines
Machines - Work Power Energy.
Work is only done by a force on an
Horses Have It… Power.
Chapter 5 Pgs
how quickly work is done
Work and Energy.
how quickly work is done
Use g = 10 m/s2 for these problems
Work Power Energy.
Energy can change from one form to another without a net loss or gain.
The Work Energy Principle Part 6
Horses have it… Mechanical Power.
Work and Machines: Work
Power.
Work.
Work & Power.
Physical Science Chapter 5
Presentation transcript:

Unit 5 Power

Power The rate at which work is done The rate of energy transfer Three variations of the equation: W Fd P = ----- P = ----- P = Fv ∆t ∆t

Power SI unit for power is the watt (W) Horsepower (hp) is also used 1 hp = 746 w Machines with different power ratings will do the same amount of work in different time intervals

A 750 N diver does a triple somersault off the 100 meter platform A 750 N diver does a triple somersault off the 100 meter platform. If it takes 1.5 seconds to hit the water, what is the divers power?

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.