A crate is pulled by a force(parrallel to the incline) up a rough incline. The crate has initial speed of 1.49 m/s. The crate is pulled a diestance of 7.46 m on the incline by a 150 N force. The acceleration of gravity is 9.8 m/s^2 and the angle is 28 degrees. The friction coefficient is 0.27. What is the change in kinetic energy of the crate, answer in Joules. And what is the speed of the crate after it is pulled 7.46 m? answer in m/s.
Anyone know the answers and why?
2006-11-03 19:15:36 · 4 answers · asked by polo_05_polo 1 in Science & Mathematics ➔ Physics
First my other friends...Do not talk with our friend like that....
Second you should have mass of crate first.But in parametric answer we have:
k(1)-k(2)=F*L-mg*Cos(b)*s*L-mg*Sin(b)*L
F=150 N, L=7.46 m, s=0.27, b=28 Degrees and m=Unknown!!!
End...Thank U...Ramin
2006-11-03 23:42:19 · answer #1 · answered by raminop2002 2 · 0⤊ 0⤋
Yes, I know the answers, though they are expressed as equations as you did not give the mass of the crate and you need this for a numerical answer.
When you say why? what do you mean? I know the answers because I worked them out.
2006-11-04 03:32:40 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Why do you want someone else to do your homework?If you really want help, you should also add, upto what stage you have done and where you are getting stuck instead of just reproducing the question verbatim.
2006-11-04 03:25:33 · answer #3 · answered by Subhasis G 4 · 0⤊ 0⤋
Gee.....Sorry I wasn't in school that day....what is the answer...lol
2006-11-04 03:17:29 · answer #4 · answered by qdrama1956 5 · 0⤊ 0⤋