A plane mirror is placed in yz plane facing towards the negative x axis.The mirror is moving parrallel to y axis with a speed of 5cm/s A point object P is moving in front of the mirror with a velocity
3cm/si+4cm/sj+5cm/sk
find the velocity of 1)image
2)image with respect to mirror
3)image with respect to the object
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UP 0 DOWN 0 0 1
1 Answers
1hmm trying...
at t=0, position of P(object) = x,y,z (say)
position of image = I = -x,y,z
at t=1 sec,
position of P = x+3, y+4, z+5
its image = I = -(x+3), y+4, z+5
change in position of image in 1 sec = -3,4,5
change in position wrt mirror = -3i+4j+5k - (5j) = -3,-1,5
ther4, vel wrt mirror : -3i -1j +5k cm/s
vel wrt to object : ( -3i+4j+5k) - (3i+4j+5k) = -6i cm/s
