Question

what is the principle of moments. show that Mechanical advantage is the ratio F1/F2=D2/D1, Where F1 and F2 are two parallel forces usually perpendicular to the lever acting at distance D1 and d2 respectively from the fulcrum​

Answer 1

Answer:

According to the principle of moments when an object is in equilibrium the sum of the anticlockwise moments about a turning point must be equal to the sum of the clockwise moments. i.e Load × Load Arm = Effort × Effort Arm

Answer 2

Explanation:

Mechanical advantage of a lever is the ratio of the load exerted on the lever and the effort put by the person to overcome some load or resistance. where F1 is the force exerted by load and F2 is the effort. where d1 is the load arm and d2 is the effort arm. Since, torque is the cross product of force and arm length.