Lever class Example Force Axis Resistance Advantage provided 1st 1st 2nd 2nd 3rd 3rd Determine and...

Lever class	Example	Force	Axis	Resistance	Advantage provided
1st
1st
2nd
2nd
3rd
3rd

Determine and list two practical examples of levers (in the body or daily living) for each lever class. Do not use examples already discussed in this chapter. For each example identify the force, axis, and resistance. Also explain the advantage of using each lever- that is, whether it is to achieve balance, force, motion, speed, or range of motion.

Solutions

Expert Solution

You did not the book chapter which you have followed. So, I don´t know the examples of levers which you have already aware of. I am giving some practical examples of levers (in the body or daily living) for each lever class.

Level class	Example	Force	Axis	Resistance	Advantage Provided
1st	elbow extension	triceps applying force to olecranon	elbow	non-supported forearm	greater than 1
1st	Head balanced on neck in flexing/extending	agonist produces force	joint axis	antagonist supplies resistance	almost equal to 1
2nd	entire body during push-up	reaction force of ground pushing against hands	foot is axis of rotation	weight of body's center of gravity	greater than 1
2nd	small stapler	force by your hand at one end	hinge at the end	occurs due the resistance by the staple	force is applied almost directly in line of the load, giving no mechanical advantage
3rd	batting	moving bat toward ball with hand of far arm	supporting lower portion of bat with hand of near arm	ball	less than 1
3rd	sweeping action of a broom	push the handle near the middle	the handle of the broom near the top	the bristles at the other end	less than one

genius_generous answered 1 year ago

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