Pakistan study notes for Matric, Intermediate, B.A, B.COM BSC, M.A, BCS. Free Pakistani Urdu educational school, colleges and University notes.

Principle And Mechanical Advantage of Lever

1.         Lever:            It is a simple machine which consists of rigid bar capable of turning about a fixed point called as fulcrum. Effort is applied on one side weight can be lifted at the other hand.

Principle of Lever:             “If a lever is in equilibrium then the torque of effort on one side is equal to the torque of load on other side”

 

Mechanical Advantage of Lever:

By the principle of Lever

Torque of effort          = Torque of weight

=> Effort x Effort arm = Weight x Weight arm

=> P x Effort arm = W x Weight arm

=> W/P = Effort arm / Load arm

Since w/P = M.A

 

M.A of Lever = Effort arm /  Load arm

 

Note:

  • Mechanical advantage of the lever increases if the effort arm is increased.
  • Effort arm is the perpendicular distance from the point of application of effort and the fulcrum.
  • Load arm is the perpendicular distance from the point of application of Load and the fulcrum.

Related posts:




Leave a Reply

Content Protected Using Blog Protector By: PcDrome. & GeekyCube.