The Power of One Find the average power Parg created by the force F in terms of the average speed Vavg of the sled

Subject:PhysicsPrice:2.85 Bought3

Share With

The Power of One Find the average power Parg created by the force F in terms of the average speed Vavg of the sled . Express your answer in terms of F and Vavg Learning Goal To learn the definition of power and how power, force, and velocity are related. sh a C The definition of work done by a force (W = Fi s) does not include time. For practical purposes, however , it is often important to know how fast work is being done. The rate at which work is being done is called power P. The average power Pavg can be calculated as Fcos TV avg Submit My Answers Give Up avg Incorrect; Try Again; 4 attempts remaining where is the amount of work done during the time interval At Part E The power created by a force may be a constant; that is, work is being done at constant rate. Howeverthis is not always the case. If the rate of performing work is changing, it makes sense to talk about the instantaneous powerdefined as This question will be shown after you complete previous question(s). lim Let us now consider some questions that include numeric data The SI unit of power is the watt (W). One watt is defined as the power created when one joule of work is done each second. In equation form, one writes A sled is being pulled along a horizontal surface by a horizontal force F of magnitude 600 N. Starting from rest, the sled speeds up with acceleration 0.08 m/s for 1 minute. 1 W 1 J/s. Part F A common used unit of work is the kilowatt-hour (kWh). One kilowatt-hour is the amount of work done in one hour when the power is one kilowatt. In equation form, this is Find the average power avg created by the force F. Express your answer in watts to three significant figures. 1 kWh = 1 kW. 1 hour Hints 103 W. 3.6 x 10s 3.6 MJ In this problem, you will answer several questions that will help familiarize you with power and enable you to derive a formula relating power, force, and velocity. sh r COO ? W