Power In which situation would you tire more quickly?

Slides:



Advertisements
Similar presentations
Work Work is done only when a force moves an object.
Advertisements

Chapter 10: Work, Energy, and Simple Machines
Chapter 15 Power. just like the word “work”, power has a different meaning in the science world power tells you how fast work is being done.
Chapter 5 Work and Machines.
Work and Power Notes. What is work ?  The  The product of the force applied to an object and the distance through which that force is applied.
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?
11.2 Energy and Power Key Question: How powerful are you? *Students read Section 11.2 AFTER Investigation 11.2.
Unit 5-1: Work and Power. Work When we were looking at force, we observed that an objects motion is related to how the force acts and how long it acts.
Power.
Energy Energy is the ability or capacity something has to affect change in another thing Forms of Energy heat electromagnetic radiation (light, radio.
Work and Power Notes. Work is done when a net force acts on an object and the object moves in the direction of the net force. Work is the product of the.
Work and Power Work is the transfer of energy that results from applying a force over a distance –if nothing moves, no work was done unit of measurement.
You are Stronger than you seem, Braver than you believe, and Smarter than you think you are. Use the gifts that you have been given.
Work & Power.
Power! We’ve talked about “work”, now let’s talk about “power”
POWER Power – Power = P = ___=___ Units = ( ) = ____ = ___ Sample Problem: A crane lifts an 8000 N beam 75 m to the top of a building in 30 s. How much.
ENERGY Notes and Key Concepts. Work  An object’s motion is related to both force and how the force acts.  The quantity force X time = impulse  The.
Chapter 6 Section 1 Work and Machines. Define work: __________________________________________ What 2 conditions apply to work? 1.________________________________________.
History a bit. MW/MWe/MWt MWe and MWt are units for measuring the output of a power plant. MWe  MegaWatts of electrical output MWt  megawatts.
Chapter 14 Work, Power and Simple Machines Do work, son!
Work and Power. What does work mean to you? In physics, work has a very specific meaning. It is the action to make things change Work= force x distance.
Chapter 14 Work, Power, and Machines. Section 1 Work and 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, ENERGY & POWER. Work  A measure of the amount of energy transformed from one form to another  For example, work is done when energy is used to.
“Do Now” for Wednesday! Draw a balanced and an unbalanced force. Illustrate the net force in each drawing.
Chapter 4.1- Work & Power. What is Work?  For work to occur two things must happen:  Work is done when an object moves in the same direction in which.
 Phantom Load: The power used by something while turned off Another word for phantom load is standby power.
Work and power And you. Work = Force x parallel displacement = F x d Units of Work = Joules = N x m.
How they are defined by science
Chapter 13 Energy and Work Section 4 Power. Power Power is the rate at which work is done or the amount of work done in a unit of time. Power is the rate.
Work  Work occurs when: 1.An object moves when a force is applied 2.The direction of the objects motion is the same as the direction of the force Formula:
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.
Lesson 9 Power of a Motor.
Chapter Eight: Work 8.1 Work 8.2 Efficiency and Power.
Task (1) What is gravitational potential energy, Eg?
Work and Power Chapter 4.
Work and Power Calculations
Work, Impulse, Momentum and Power
Work & Power. Work & Power Work : one definition Energy used to move something Work = force applied x distance moved ***force and distance must be.
What Is Work? Chapter 12 Section 1.
Because the barbell is motionless, no work is done on the barbell.
WORK.
JAMES WATT Son of a merchant, born in Greenock, Scotland, in 1736.
Work = when a force is applied on an object and it moves in the direction of the force.
Work and Power.
Work & Power. Work & Power Work : one definition Energy used to move something Work = force applied x distance moved ***force and distance must be.
Work, force, motion, and power
WORK, POWER AND ENERGY! (ACCORDING TO PHYSICS)
April 20, 2010 Explain why holding a large box is not considered work.
Measuring Energy YEAR 8 PHYSICAL SCIENCE.
Power In which situation would you tire more quickly?
2 CLIP TRANSFER OF ENERGY W = F • d Unit= Joule.
Chapter Eight: Work 8.1 Work 8.2 Efficiency and Power.
Potential and Kinetic Energy
Energy can change from one form to another without a net loss or gain.
2 W = F • d CLIP Unit= Joule.
Work and Power.
Power.
WORK.
Work.
2 W = F • d CLIP Unit= Joule.
Is work vector or scalar.
Energy transfers & efficiency
Simple Machines & Work.
Work.
What is Power?.
Sci. 4-1 Work and Power Pages
Work & Power.
Work Work is done when a force is exerted on an object and the object moves a distance x. Work = force ·distance W = F · d units: N·m = Joule Work is.
Physical Science Chapter 5
Presentation transcript:

Power In which situation would you tire more quickly?

Notice that in the formula for work, it says nothing about time Work = force x distance

The rate at which work is done Power The rate at which work is done Power = work done time Unit: Joule second : watt

A little bit of history To find out how the power of his engine compared to that of a horse, James Watt measured how fast an average horse could do work. He found the answer and expressed the amount of work performed per second as a horsepower. 1 horsepower = 746 Watts In the US we rate engines in terms of horsepower and electricity in watts (kilowatts, megawatts)

Horsepower

What can a more powerful engine do? One of 2 things Power = work done time 2x work or work time ½ time

A Lab for you to do http://www.wikihow.com/Calculate-Horsepower

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

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