Physics Question A thin metal rod of mass 1.2 kg and length 0.5 m is at rest in
ID: 1467279 • Letter: P
Question
Physics Question A thin metal rod of mass 1.2 kg and length 0.5 m is at rest in outer space, near a space station (see figure below). A tiny meteorite with mass 0.07 kg traveling at a high speed of 250 m/s strikes the rod a distance 0.2 m from the center and bounces off with speed 60 m/s as shown in the diagram. The magnitudes of the initial and final angles to the x axis of the small mass's velocity are theta = 26 degree and theta t = 82 degree. Afterward, what is the velocity of the center of the rod? (Express your answer in vector form.) VCM = times m/s Afterward, what is the angular velocity omega of the rod? (Express your answer in vector form.) omega = rad/s What is the increase in internal energy of the object JExplanation / Answer
b)
angular speed = d angle/d t = |w(t)| = (wx2+wy2+wz2).
time = distane/speed
= 0.2/60
=3.3* 10^-3 s
then wi=26/1.3*10^-3 wf = 82/1.3*10^-3
= 20000 =63,076.9
w = (2000,63076.9,0)