1.) A book of mass 0.55kg is lifted from the floor to a height of 3.5m at a constant velocity. Recall the definition of work. How much work is done by FLift? By Fg? By Fnet? How much gravitational PE does the book have at the top relative to the floor? 2.)If the object in Q1 is released from rest after it is lifted, what is its kinetic energy just before it hits the floor? What is its speed?
1.) A book of mass 0.55kg is lifted from the floor to a height of 3.5m at a constant velocity. Recall the definition of work. How much work is done by FLift? By Fg? By Fnet? How much gravitational PE does the book have at the top relative to the floor? 2.)If the object in Q1 is released from rest after it is lifted, what is its kinetic energy just before it hits the floor? What is its speed?
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter7: Work, Energy, And Energy Resources
Section: Chapter Questions
Problem 7PE: A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N...
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1.) A book of mass 0.55kg is lifted from the floor to a height of 3.5m at a constant velocity. Recall the definition of work. How much work is done by FLift? By Fg? By Fnet? How much gravitational PE does the book have at the top relative to the floor?
2.)If the object in Q1 is released from rest after it is lifted, what is its kinetic energy just before it hits the floor? What is its speed?
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