a train locomotive (m=23500) pulling 3 identical cars accelerates at 0.225m/s^2.
a)what force does the first car pull on the second (no friction)
b) if the friction on each car is 1100N, what must be the force that the locomotive exerts against the rails?
2006-12-16 11:54:25 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
a) the mass of the remaining cars times the acceleration
b) The sum of all the frictional forces plus the force required to achieve the acceleration of the cars.
2006-12-16 12:32:45 · answer #1 · answered by arbiter007 6 · 0⤊ 0⤋
Let's start with the obvious...the words 'simple' and 'physics' should not be in the same sentence.
2006-12-16 19:56:31 · answer #2 · answered by Nibbles 5 · 0⤊ 0⤋
knock it off. this is yahoo for craps sake.
2006-12-16 20:04:19 · answer #3 · answered by Anonymous · 0⤊ 0⤋