Recent content by jtwitty

Here

1. Suppose a hanging 1.0kg lab mass is attached to a 4.0kg block on the table a. If the coefficient of kinetic friction, \muk is .2, what is the acceleration?

\muk i don't know what it means??

i meant a = \Sigmaf / m thats a real equation

Homework Statement 1. Suppose a hanging 1.0kg lab mass is attached to a 4.0kg block on the table (The picture) a. If the coefficient of kinetic friction, \muk is .2, what is the acceleration? b. What would the mininum value of the coefficient of static friction, \mus, in order for the...

yay! thanks for your help :P

THE ELEVATOR MASS IS 4,900kg BECAUSE the weight is 49,000 so 49000 / 10 (gravity) = kg i love figuring myself outnahhahahhahahahha thanks for letting me put the problem out there edit: is that right? :/

ty man ty :)

Homework Statement An elevator is lifted by a capble with a tension fo 50,000N. The weight of the elevator is 49,000N. How fast will the elevator be moving after 5 seconds if it starts from rest. Homework Equations IDK! The Attempt at a Solution I found the net force to be 1000N...

haha :))) thanks so much man :)

a = .2m/s d = 1/2 (.2) (100) d = 10 a = vf /t .2 = vf /10 2 = vf done? :) how'd i do

i didn't know if i was right or not :( was i??

heres what i just came up with netforce = 4000 - 500 = 3500 a = 3500/1500 a = 2.4 d= 1/2a(100) d=120m a = vf /t vf = 24 ??

help?

Sorry; this is like soooooooo hard Homework Statement A car with a mass of 1500 kg has en engine which can produce 4000N of thrust. Assume that the air resistance on the car is a constant 500N. If the car starts from rest, how fast will it be moving after 10 seconds. Homework Equations...