- #1

JackyCheukKi

- 1

- 1

- Homework Statement
- Work energy theorem please help me

- Relevant Equations
- energy initial(of one object) + net work done on the object = energy final??

Guys, I have a problem that really needs you guys to help, I know it is a stupid question but please bear with me:

Context:

You have a block on a slope(has friction) you use a string to pull the block up with constant speed.

Problem:

So according to the network theorem, the work net is equal to the change in kinetic energy, and here we can see that the kinetic energy remains the same and the net work should be zero. But my problem is if the net work is zero, how the heck did the block move up the slope?? if it moves up the slope, it gains POTENTIAL ENERGY right??

isn't Energy(initial) + net work = Energy(final) ?

Context:

You have a block on a slope(has friction) you use a string to pull the block up with constant speed.

Problem:

So according to the network theorem, the work net is equal to the change in kinetic energy, and here we can see that the kinetic energy remains the same and the net work should be zero. But my problem is if the net work is zero, how the heck did the block move up the slope?? if it moves up the slope, it gains POTENTIAL ENERGY right??

isn't Energy(initial) + net work = Energy(final) ?