[問題] 大一普物的計算題
problem 1. Find the equation of motion for a particle of mass m attached on
a spring with spring constant k.
problem 2. Find the velocity v(t) if the drag force D=bv2 acting on a body
falling in air with v0=0 and y0=0. What is the terminal speed vT? Find what is
the velocity v(t) for small t ?
problem 3.A massless rope is tossed over a wooden dowel of radius (r) in
order to lift a heavy object of weight (W) off of the floor . The coefficient
of sliding friction between the rope and the dowel is (u) . Show that the
minimum downward pull on the rope necessary to lift the object is
(pi)(u)
F = We
down
這是我們某某物理教授所出的問題 但是有牽扯到微積分
希望板上神人可以幫忙解一下....
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