An sphere with radius of 10cm have its center at . rotates around the z axe with angular velocity of 4 and its rotation is seen counterclockwise from the z axe.

a)Claculate the rotation vector W
b)Calculate the velocity V=WxR (W cross product R) when r=5√2 (i-j) is in the equator

Question

An sphere with radius of 10cm have its center at . rotates around the z axe with angular velocity of 4 and its rotation is seen counterclockwise from the z axe.

a)Claculate the rotation vector W
b)Calculate the velocity V=WxR (W cross product R) when r=5√2  (i-j) is in the equator

anonymous · Answer

i thought doing cross product, with W=<0,0,4> and R=(5√2,-5√2,0) but the thing about equator concerns me

anonymous · Answer

use angular velocity to compute rotation vector