Question

Class II levers like ankles and wheelbarrows are useful because they provide mechanical advantage, by amplifying the input force to provide a greater output force. In other words, we can lift a load without having to lift the full weight of the load. Prove using a mathematical relation that Class II levers provide mechanical advantage. You will need to use the rotational equilibrium condition. It will be helpful to draw a picture indicating the movement of the load. Also, to simplify we can assume the force is still perpendicular to r by considering the case when the load just starts to move.

Answer 1

ou Schematic diagram of wheel barrow A DLA o Load & Extent og Fulcrum So using rotational equilibrium condition, Load & D = Effort & DE I so Load Effort - DE DL

DATE: 1 (as De is greater than So Mechanical Advantage = DE I When it starts to move the horizontal distance decreases but then also there is a mechanical advantage to it. ..