Question

if root(a^2 + b^2) represents the magnitude of resultant of two vectors (a + b) and (a-b) then the angle between the two vectors is? [MHT-CET 2019]​

Answer 1

Answer:

hammer is a simple force amplifier that works by converting mechanical work into kinetic energy and back. In the swing that precedes each blow, the hammer head stores a certain amount of kinetic energy—equal to the length D of the swing times the force f produced by the muscles of the arm and by gravity.