1. 拎起物件：物件增加了 gravitational potential energy，而这物件赚得的 energy 是从我们的手拎起它的力而来，所以 There is work done on the object by us. 2. 拎起物件后不动：虽然我们拎住件物件消耗了我们的能量，令我们觉得疲倦，但是物件并没有再赚得额外的 PE 或 KE，我们没有再传送...
and I'm pretty sure potential energy is not neccissarly the same as work done. It's the negative of the change in PE that is the same as work done by a conservative force (like a spring, which is the case here) Also if the was the case wouldn't the spring constant reach it...
势能动能工作Workand动能和势能workdoneAnd 系统标签: energykineticworkpotential动能势能 451.7W kD ne,P tent ndK net Ene Studentss u dbe b et :1.7.1De neworkdone,potentialenergy,kineticenergy,ef ciencyandpower1.7.2Recognisethatwhenworkisdoneenergyistransferredfromoneformtoanother1.7.3Calculatetheworkdon...
Objectives: Students will become familiar with the concepts of work , conservative forces and potential energy . In addition, they will become acquainted with the principle of virtual work . After studying this chapter, students should be able to correctly apply this principle in order to determine...
In summary, the conversation discusses the calculation of potential and potential difference between two points due to an electric charge, as well as the change in electric potential energy and the work done by the electric field. The solutions provided involve using the formula VA=kq/r and ...
Chapter 3 Work and Energy §1 Work §2 Work – Kinetic Energy Theorem §3 Conservative Forces and Potential Energy §4 Work-Energy Theorem and Conservation of Mechanical Energy §5 The Gradient §1 Work (P147) 1. Work (1). Work Done by a Constant Force A particle ...
If the gravitational acceleration is 9.8 m s-2, then the work done against gravity is 100 J 980 J 19.6 J 490 J Half-n-half Clue 7. The energy acquired by a body because of its motion is called potential energy. True False 36 more pages in School Physics Quiz...
Chapter 4 Work and Energy Charpter4WorkandEnergy Studytheeffectoftheproductofforceandspace 4.1Work4.2TheoremOfKineticEnergy4.3WorkOfAPairOfForces4.4ConservativeForce4.5PotentialEnergy4.6ConservativePotentialEnergy4.7ElasticPotentialEnergyOfASpring4.8ConservativeForceAttainedFromPotentialEnergy4.9Conservative...
–(orifthegasisinacylinder,bypushingand movingapistona) Firstlaw(internalenergy) •Theinternalenergyofagasconsistsof2 components •Kicenergy(translational,rotationaland vibrational) •Potentialenergy(duetointermolecular s) Firstlaw(internalenergy) ...
·m2s2(6.2)Aswewillsee,thejouleisalsotheunitofworkWandpotentialenergyU.Otherenergyunitsoftenseenare:1erg=1g·cm2s2=10−7J1eV=1.60×10−19J6.1.2WorkWhenanobjectmoveswhileaforceisbeingexertedonit,thenworkisbeingdoneontheobjectbytheforce.IfanobjectmovesthroughadisplacementdwhileaconstantforceFis...