During the daytime, I have mostly line symmetry.
During the night, I often have almost spherical symmetry.
K=0.5 mu×u
K=2200J no matter the direction
Answer:
By holding another magnet close to it. If the object is attracted to the magnet, then it too is magnetic.
As we know that spring force is given as

here we know that
F = 4 N
x = 2 cm = 0.02 m
now from the above equation we will have


so the elastic constant of the spring will be 200 N/m