Question

Consider a sphere centered at the origin of radius 1 that rotates about the z-axis in a "west to east" direction with constant angular speed \omega. Suppose that an ant travels "north" on the sphere with angular speed \eta and is located at (1,0,0) at time t=0. Then the position of the ant can be given by (t)cos(nt)cos(wt), cos nt)sin(t), sin(nt)) for -\pi/2\eta \le t \le \pi/2\eta . Compute the acceleration and show that it can be written as a(t)(t) ac(t) a(t) where10 (t)--(w2 + η2)cos(yt) <cos(at), sin(wt), 0 cos at), Sinlw, ac(t)2wnsin(nt)-sin(t), cos(t),0) , a(t) (0,0, -sin(nt)) .



(t)cos(nt)cos(wt), cos nt)sin(t), sin(nt))

a(t)(t) ac(t) a(t)
10 (t)--(w2 + η2)cos(yt)
0 0
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Answer #1

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