The elbow in the hand is analogous to the fulcrum in a lever
The load arm is the radius of the pulley. This is the distance from the fulcrum to the load-carrying side of the rope.
Length of input arm (input force to the fulcrum) divided by the Length of the output arm (output force to the fulcrum)exampledin/dout=2cm/4cm=0.5in the example the IMA is 0.5
Fulcrum I think.
It's the rivet or pin that joins the two main pieces.
The advantage of a first class lever is that by using less input force, you get more output force. Teehee!
The input arm is the distance between the input force and the fulcrum. The output arm is the distance between the output force and the fulcrum. The fulcrum is the fixed point around which the pulley rotates.
In a catapult, the fulcrum is at the base of the throwing arm, the effort arm is the portion of the arm from the fulcrum to the point where the force is applied, and the load arm is the portion of the arm from the fulcrum to the payload being launched. The distance and positioning of these components determine the efficiency and effectiveness of the catapult in launching projectiles.
a lever is what it would be sir/mam
Fulcrum.
A fulcrum would be placed as close to the heavy load as possible. This minimizes the lever arm (and thus minimizes the torque) for the load while maximizing the lever arm (and thus maximizing the torque) for the force you must apply.
The distance from the applied force to the fulcrum is called the effort arm or lever arm. It is the perpendicular distance between the line of action of the force and the fulcrum in a lever system. The length of the effort arm affects the mechanical advantage of the lever.
It's a tool
It's a tool
load arm, effort arm, load, effort, fulcrum!
Only a very small force if the arm only has to be supported. What other weights do the arm carry and at what angle does the biceps attach to the fore-arm? What is the distance to the hand from the fulcrum and what is the arm weight (assuming a weight is in the hand and arm weight has to be added to the weight-in-hand)? The length of the hand to fulcrum is also required. There is no such thing as 90% angle: 90 degrees perhaps?
It's a tool
It's a tool