Week 2

Question 1

What is the equation for Torque?

Answer 1

Force * moment arm

Question 2

If the Σ of the moments and Σ of the forces are equal to 0, what branch of biomechanics is this an example of?

Answer 2

Statics

Question 3

A class 1 lever can have a mechanical advantage of what?

Answer 3

> or < 1

Question 4

What is the equation for MECHANICAL ADVANTAGE?

Answer 4

MA = EA/RA

Question 5

Which image would produce the greatest torque?

Answer 5

The image on the right

Question 6

What is the distance between an effort and a fulcrum called?

Answer 6

Effort Arm

Question 7

What is the mechanical advantage of a 3^rd class lever?

Answer 7

ALWAYS <1

Question 8

What is the mechanical advantage of a 2^nd class lever?

Answer 8

Always >1

Question 9

How do you calculate a moment?

Answer 9

M= (f) ⊥ (d)

Question 10

What is the distance between a load and fulcrum called?

Answer 10

Resistance Arm

Question 11

What are the advantages and disadvantages of 3^rd class levers?

Answer 11

• Advantages
  
  • ​Maximum speed
  • Max range of motion
• Disadvantages
  
  • ​limits how much force can be produced by the system

Question 12

What happens to force if you reduce the size of the moment arm?

Answer 12

Force requirement decreases

Question 13

What is a spurt muscle and what does it contribute to?

Answer 13

a muscle that gives force during movement causing rotary motion.