Recent content by kroq

Homework Statement Hi there, I'm working on a simple model vehicle (powered by a twisted rubber band) applying torque to a drive wheel. I just want to understand the loads going through the member bodies. I've mocked up the enclosed free body diagrams and attempted to outline the systems...

Anyone? Thx

Hi all, I would be greatful for a 2nd pair of eyes on my system of equations. What am I missing? Thanks much! K

Hi, Attached is my free body diagrams and equation set. Even when trying to solve for my forces by hand, I'm running into inconsistencies ... by default (summation of forces & moments ... I should have 9 equations, right?) ... but I have fewer unknowns which doesn't seem right. Am I...

Hi Ideasrule, Thanks for your reply. This car will have a sizable rubber band (looped several times) and will still be unwinding as it crosses the finish (~350 winds and about 12 inches long) Thanks for the tip. Torque would definitely decrease during unwinding, which leads me to believe...

Homework Statement I'm building a little model vehicle that will be powered by a twisted rubber band. Givens: m_front wheels m_back wheels m_body coeff. of friction (static) = 0.2 assumed T = Torque applied = 0.86 N-m based on lab tests Weights (of above parts) by multiplying 9.81...