Question: Which of the following statements is true regarding qualitative analysis?
Answer Choices:
It is always of a general nature
It does not involve the use of numbers
Both A and B
Neither A nor B
Answer: It does not involve the use of numbers
Question: Third class lever systems favor which of the following?
Speed
Answer Choices:
Strength
Both speed and range of motion
All of the choices are correct
Answer: Both speed and range of motion
Question: What will happen to the COM of a human body if the arms are raised up overhead?
Answer Choices:
it will move up
it will move down
it will not change
need more information to predict
Answer: it will move up
Question: Which of the following must be true for an object to be in a state of static equilibrium?
Answer Choices:
the sum of all vertical forces acting on the object must be equal to zero
the sum of all horizontal forces acting on the object must be equal to zero
the sum of all torques acting on the object must be equal to zero
all of the choices must be true
Answer: all of the choices must be true
Question: The amount of torque which must be generated by the biceps brachii at the elbow in order to maintain the arm in a particular position is 50 Nm. If the biceps attaches to the radius at a perpendicular distance of 3 cm from the joint center at the elbow, how much force must the muscle produce? Pay attention to units!
Answer Choices:
1667 Newtons
17 Newtons
150 Newtons
1.5 Newtons
Answer: 1667 Newtons
Question: Which of the following is the most appropriate definition of biomechanics?
Answer Choices:
The study of human movement
The study of biological organisms
The study of movement mechanics
The study of the mechanical aspects of biological organisms
Answer: The study of the mechanical aspects of biological organisms
Question: When a muscle contracts at a joint, which of the following affects torque?
The distance between the muscle’s attachment and the axis of rotation
Answer Choices:
The angle of the joint
The force generated by the muscle
All of the choices are correct
Answer: All of the choices are correct
Question: A seesaw is an example of which class of lever?
1st class
Answer Choices:
2nd class
3rd class
None of the choices are correct
Answer: 1st class
Question: The resistance arm (RA) will always be longer than the force arm (FA) in what class lever?
Answer Choices:
1st class
2nd class
3rd class
none of the choices are correct
Answer: 2nd class
Question: Which of the following is a characteristic of torque?
Answer Choices:
it is a vector quantity
it is characterized by its magnitude
it is characterized by its direction
all of the choices are correct
Answer: all of the choices are correct