A lever of length 9 cm has its load arm 5 cm long and the effort arm is 9cm long class does it belong? (b) Draw diagram of the lever showing the position of fulcrum f directions of both the load L and effort E. (c) What is the mechanical advant so if the efficiency is 100% ? (d) What will be the mechanical advantage and velocity o if the efficiency becomes 50%? (Ans. When efficiency is 100%, then MA 18, and VR-18 When efficiency is 50 %, then MA -0.9, and VR is same or 1.8) ​