I'm not sure how to solve a differential equation with unit step function, for example:
x'' + 2x' + x = 10t*u(t), where x(0)=1 and x'(0)=0
Do I just ignore the u(t) and solve it regularly by normal integration?
Hi, I'm having difficulty figuring out the radius for this problem, I need the radius in order to figure out the kinetic energy:
A wheel has a thin 2.8 kg rim and four spokes each of mass 1.4 kg. Find the kinetic energy of the wheel when it rolls at 6 m/s on a horizontal surface.
I know...