Recent content by LoN

thanks for the help, what a lame mistake i was making

haha yes i do. small world eh :biggrin: i must not be setting this up right, here's what I am doing. 1/2 m v^2 = mgh solve for v for each height, 1 m and 3m. then find the change in momentum by multiplying the vs i have solved for by the mass of the ball and subtract. i get .0162 for...

a 5g balls fall dropped from 3m bounces up 1m. if 100 such balls fall on an area of 2m^2 every second what is the average pressure exerted by the balls? ive tried to solve this problem 100 different ways and i can't get the answer (3Pa).

A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23° to the horizontal holds the sign to the wall. Note that the distance from the left edge of the sign to the wall is 1 m. Suppose...