posted by rob .
particles of mass 3m and 5 m hang one at each end of a light inextensible string which passes over a pulley.The system is released from rest with the hanging parts taunt and vertical.During the subsequent motion the resultant force exerted by the string on the pulley is of magnitude-
Now to greater errors. What exactly is a mass of 3m or 5m?
And in the answers, since when is force measured in milligrams? Isn't that a mass unit?
Something is major wrong in your physics class, this usage is not acceptable: Remember this was the problem that brought down the English units, confusing lbs force and lbs mass.
I am not taunting you or your instructor, I hope.