use the angle slider to change the angle at first and just use the sliders to play around u have to understand physics calculations for this
i leant this on khan academy ap college physics FUN FACT: did you know that friction helps a rolling object move?. If you try pedaling your bike on a frictionless surface the wheels will just spin and create torqe but you wont move. If you put in on a friction less incline the wheels wont turn, they will just slide. ice is a frictionless surface
