Question

a body is in equilibrium under the action of three force vectors a,b & c simultaneously. show that a cross b = b cross c=c cross a.

Answer 1

these force vectors can be translated to appear as triangle sides....
so vec a + vec b + vec c =0
take a cross above eq...u get a crss b + a crs c=0
gives a crs b = c crs a ...and so on
try b crs eqn....and c crs eqn...u will get the ans

Answer 2

thanks arnavguddu.