Recent content by zdickz

So here's the problem: Bodybuilder “Hulk” Heise is doing leg curls on a Cybex machine. “Hulk” gets stuck (see figure) with 90° angle at the knee joint. The force exerted by the machines (FA) on his leg is 500 N, directed at an angle of 55° (angle α) relative to the tibia, and the distance...

I have to draw a graph of showing the velocity and acceleration based on the position of a person's hand as it reaches for an object. I attached a scan of my work and was hopeful for some feedback. I realize it's not perfect in scale, and I plan to do a final copy for submission. Thank you in...

Thank you!

Homework Statement A truck tractor pulls two trailers, one behind the other, at a constant speed of 100 km/h. It takes 0.610 s for the big rig to completely pass onto a bridge 390 m long. For what duration of time is all or part of the truck-trailer combination on the bridge? d = 390 m v...

Thank you! I've been poking around here and there. I've almost posted a couple of other questions, but in the process of trying to input the problem on here, I've solved the problem. I attached a FBD I drew up.

This is for an online homework assignment that apparently is not crediting the proper answer. I'm just curious to know if I got this right or if I'm way off. Thanks in advance.Homework Statement If the coefficient of static friction is 0.362, and the same ladder makes a 61.0° angle with...