## geerky42 Group Title Two blocks (with masses 20.5 kg and 68 kg) are connected by a string as shown. The pulley is frictionless and of negligible mass. The coeﬃcient of kinetic friction between block and machine is 0.257. Find the change in the kinetic energy of the block on the incline as it moves a distance of 15.4 m up the incline if the system starts from rest. one year ago one year ago

1. geerky42 Group Title

2. geerky42 Group Title

first, I have to set up equation for sum of force, find net force, then multiply it by the distance, right?

3. ndwelsh Group Title

reported abusive - CHEATING !!!!

4. geerky42 Group Title

How is that cheat? I'm looking for a way to solve this problem.

5. geerky42 Group Title

And my way doesn't work.

6. ndwelsh Group Title

So, report that problem as something you didn't solve

7. ndwelsh Group Title

everything else is on the side. Understood?

8. ndwelsh Group Title

are you learning physics or building problem solving skills?

9. geerky42 Group Title

I just need help, I can't figure out how solve this problem... Thats why I am here... Isn't it what Openstudy is for?

10. geerky42 Group Title

Both...?

11. ndwelsh Group Title

you can't cheat, this has to be stopped. Ask this question out of your knowledge of theory.

12. Yahoo! Group Title

hey @greeky42 he is just trolling just ignore him

13. ndwelsh Group Title

speak to me directly, like this: Aren't you trolling now?

14. ndwelsh Group Title

that's concern #1

15. ndwelsh Group Title

do not assume for me. Is that clear?

16. geerky42 Group Title

And my theory is apparently wrong, and I don't know why. And it's isn't cheating. You are obviously trolling, just like Yahoo! said.

17. Yahoo! Group Title

$W = \Delta K.E$

18. Yahoo! Group Title

intial K.E is 0 brcoz the body was at rest..)

19. ndwelsh Group Title

It's not *YOUR* theory, it's your knowledge.

20. ndwelsh Group Title

so, it's knowledge which is wrong, theory is always there.

21. geerky42 Group Title

@Yahoo! And $W = x \sum F$ right?

22. geerky42 Group Title

My knowledge* Better, knowledge nazi?

23. Callisto Group Title

Sorry to interrupt. I think it's better to stop the discussion on cheating here. And also, it's okay to seek help for your homework, as long as you're looking for a way to learn how to do it, not just copying others work. @ndwelsh I think we'd better have a private talk.

24. ndwelsh Group Title

what is fun about substituting numbers to formulas? Aren't you striving for better degree? What are you supposed to learn? Physics, elementary principles of expressions and variables?

25. ndwelsh Group Title

@Callisto - who am I talking to now?

26. Yahoo! Group Title

nw ur job is to Find Work done..By the Body on incline

27. ndwelsh Group Title

Whatever you are trying to achieve in the future will unfold improperly. MARK MY WORDS NOW, bunch of puppets

28. Yahoo! Group Title

$W=F.S.\cos \theta$

29. geerky42 Group Title

@ndwelsh Like, you think I take physics for absolutely no reason? Sure... And you are here, trolling and claiming everyone is cheating... I think your life has been unfolded improperly.

30. Yahoo! Group Title

Or another way to approach this is find accl

31. ndwelsh Group Title

Hold on there horse, don't you say "trolling" regarding my name any more? It's your stupid cheating Wikipedia type of philosophy that explains your inadequacy better than my life.

32. ndwelsh Group Title

answer now, what's wrong about using reference books better than theory books?

33. ndwelsh Group Title

Apparently I'm more knowledgable in this topic than you are

34. geerky42 Group Title

Yet, I don't need you, fortunately. There are knowledgable beings who are wise enough not to troll in this site and are willing to help others. What about you? Answer now. What do you do with your life? Trolling? Well, that's pathetically sad. Beside you are wasting your time.

35. geerky42 Group Title

@Yahoo! How can I find acceleration? its seems that there is not enough information.

36. ndwelsh Group Title

discussing my life at this point seems to be more off the topic. --- THAT'S FOR ADMINS TO TAKE NOTE don't you SPIT THAT POISON IN MY FACE, fraking DOLL?

37. ndwelsh Group Title

JUST GET THAT, CHEATER - BECOME PUNISHED FOR THAT IN FUTURE

38. geerky42 Group Title

@ndwelsh Delight me.