Rhett Allain
I haven't used half of the information give in the problem and I'm pretty sure potential energy is not neccissarly the same as work done. Also if the was the case wouldn't the spring constant reach it's ultimate tensile stress or fracture point. Please help I was away when we ...
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...
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.
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Physics 1D03 - Lecture 22 Potential Energy Work and potential energy Conservative and non-conservative forces Gravitational and elastic potential energy. Conservative Forces: The forces is conservative if the work done by it on a particle that moves between two points depends only on these points an...
The work done by non-conservative forces is equal to the total change in kinetic and potential energy. True or False?Work-Energy Principle:When work is done by many forces acting on a body, the kinetic energy of the object changes. The total wo...
The basic unit of energy and work is the Joule (J):1 Joule is the work done by 1 Newton moving 1 meter 1 J = 1 N × 1 m The Joule has the units N m, or kg m2/s2 (because a Newton is kg m/s2)Only force and movement in the same direction count, so a more accurate ...
Kinetic Energy and Work; Potential 动能和工作潜力.ppt,Kinetic Energy and Work; Potential Energy;Conservation of Energy. Lecture 07 Thursday: 5 February 2004 WORK Work provides a means of determining the motion of an object when the force applied to it is
1.6.Does the potential energy increase or decrease? 1.7. How much work is done by the electric field due to chargeQ as q moves fromA toB?2. The attempt at a solution 1.1 VA=kq/r =(9x109)(10n)/0.3 =300V You substituted wrong value for the charge - everywhere. The sign of the...