Question 1

In the human body, most of the lever systems formed by muscles pulling on bones are what class?

Accepted Answer

A)  1st class 
B)  2nd class 
C)  3rd class 
D)  no particular class is dominant 
A)  1st class 
B)  2nd class 
C)  3rd class 
D)  no particular class is dominant C

Question 2

The amount of torque which must by 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?

Accepted Answer

A)  1667 N 
B)  17 N 
C)  150 N 
D)  1.5 N 
A)  1667 N 
B)  17 N 
C)  150 N 
D)  1.5 N A

Question 3

Torque is the angular analogue of what?

Accepted Answer

A)  momentum 
B)  force 
C)  mass 
D)  impulse 
A)  momentum 
B)  force 
C)  mass 
D)  impulse B

Question 4

Which of the following must be true for an object to be in a state of static equilibrium?

Accepted Answer

A)  the sum of all vertical forces acting on the object must be equal to zero 
B)  the sum of all horizontal forces acting on the object must be equal to zero 
C)  the sum of all torques acting on the object must be equal to zero 
D)  all of the above must be true 
A)  the sum of all vertical forces acting on the object must be equal to zero 
B)  the sum of all horizontal forces acting on the object must be equal to zero 
C)  the sum of all torques acting on the object must be equal to zero 
D)  all of the above must be true

Question 5

The relative efficiency of a lever is proportional to which of the following?

Accepted Answer

A)  mechanical advantage of the lever 
B)  length of the force arm 
C)  length of the resistance arm 
D)  the amount of force needed to move the lever 
A)  mechanical advantage of the lever 
B)  length of the force arm 
C)  length of the resistance arm 
D)  the amount of force needed to move the lever

Question 6

Which type of equipment provides constant velocity?

Accepted Answer

A)  isotonic 
B)  free weights 
C)  Nautilus 
D)  Isokinetic 
A)  isotonic 
B)  free weights 
C)  Nautilus 
D)  Isokinetic

Question 7

Which statement is true regarding moment arm?

Accepted Answer

A)  Moment arm is largest when the angle of pull on a bone is 90°. 
B)  Changes in moment arm directly affect joint muscle torque. 
C)  For torque to remain constant, more force must be produced when moment arm decreases. 
D)  both A and B 
E)  all of the above 
A)  Moment arm is largest when the angle of pull on a bone is 90°. 
B)  Changes in moment arm directly affect joint muscle torque. 
C)  For torque to remain constant, more force must be produced when moment arm decreases. 
D)  both A and B 
E)  all of the above

Question 8

Which of the following is/are true regarding dynamic equilibrium?

Accepted Answer

A)  applies to bodies in motion 
B)  first identified by D'Alembert 
C)  both A and B 
D)  there is no such thing as dynamic equilibrium 
A)  applies to bodies in motion 
B)  first identified by D'Alembert 
C)  both A and B 
D)  there is no such thing as dynamic equilibrium

Question 9

Running barefoot results in higher joint torque at the knee than using running shoes.

Accepted Answer

A) True 
 B)False

Question 10

What is the proposed advantage of Nautilus resistance equipment over free weights?

Accepted Answer

A)  resistance varies over the range of motion with Nautilus equipment 
B)  resistance varies over the range of motion with free weights 
C)  muscle force requirements change over the range of motion with Nautilus equipment 
D)  none of the above is advantageous 
A)  resistance varies over the range of motion with Nautilus equipment 
B)  resistance varies over the range of motion with free weights 
C)  muscle force requirements change over the range of motion with Nautilus equipment 
D)  none of the above is advantageous

Question 11

What will happen to the COM of a human body if the arms are raised up overhead?

Accepted Answer

A)  it will move up 
B)  it will move down 
C)  it will not change 
D)  need more information to predict 
A)  it will move up 
B)  it will move down 
C)  it will not change 
D)  need more information to predict

Question 12

If force is applied directly to the axis of rotation, torque will equal zero.

Accepted Answer

A) True 
 B)False

Question 13

A concept indicating a balance between applied forces and inertial forces for a body in motion is called ___________________ ___________________.

Accepted Answer

The answer of A concept indicating a balance between applied...

Question 14

Provide 2 examples in sport, dance or rehabilitation where maximum stability is desired and explain various ways this can be accomplished.

Accepted Answer

In the sport of weightlifting, maximum s

Question 15

A claw-tooth hammer being used to pry up a nail is an example of which class of lever?

Accepted Answer

A)  1st class 
B)  2nd class 
C)  3rd class 
D)  not a lever 
A)  1st class 
B)  2nd class 
C)  3rd class 
D)  not a lever

Question 16

The ratio of force arm to resistance arm defines ___________________ __________________.

Accepted Answer

mechanical

Question 17

Explain 1 lever system within the human body, including the lever, axis, force, resistance, class, mechanical advantage and practical advantages.

Accepted Answer

A 1 lever system within the human body c

Question 18

When net muscle torque and joint movement occur in the same direction, what type of contraction occurs?

Accepted Answer

A)  concentric 
B)  eccentric 
C)  isometric 
D)  isotonic 
A)  concentric 
B)  eccentric 
C)  isometric 
D)  isotonic

Question 19

A seesaw is an example of which class of lever?

Accepted Answer

A)  1st class 
B)  2nd class 
C)  3rd class 
D)  not a lever 
A)  1st class 
B)  2nd class 
C)  3rd class 
D)  not a lever

Question 20

Which of the following will benefit mobility?

Accepted Answer

A)  increase mass 
B)  increase base of support 
C)  increase friction 
D)  raise center of gravity 
A)  increase mass 
B)  increase base of support 
C)  increase friction 
D)  raise center of gravity

In the human body, most of the lever systems formed by muscles pulling on bones are what class?

The amount of torque which must by 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?

Torque is the angular analogue of what?

Which of the following must be true for an object to be in a state of static equilibrium?

The relative efficiency of a lever is proportional to which of the following?

Which type of equipment provides constant velocity?

Which statement is true regarding moment arm?

Which of the following is/are true regarding dynamic equilibrium?

Running barefoot results in higher joint torque at the knee than using running shoes.

What is the proposed advantage of Nautilus resistance equipment over free weights?

What will happen to the COM of a human body if the arms are raised up overhead?

If force is applied directly to the axis of rotation, torque will equal zero.

A concept indicating a balance between applied forces and inertial forces for a body in motion is called _ _.

Provide 2 examples in sport, dance or rehabilitation where maximum stability is desired and explain various ways this can be accomplished.

A claw-tooth hammer being used to pry up a nail is an example of which class of lever?

The ratio of force arm to resistance arm defines _ .

Explain 1 lever system within the human body, including the lever, axis, force, resistance, class, mechanical advantage and practical advantages.

When net muscle torque and joint movement occur in the same direction, what type of contraction occurs?

A seesaw is an example of which class of lever?

Which of the following will benefit mobility?

What Is Biomechanics

Kinematic Concepts for Analyzing Human Motion

Kinetic Concepts for Analyzing Human Motion

The Biomechanics of Human Bone Growth and Development

The Biomechanics of Human Skeletal Articulations

The Biomechanics of Human Skeletal Muscle

The Biomechanics of the Human Upper Extremity

The Biomechanics of the Human Lower Extremity

The Biomechanics of the Human Spine

Linear Kinematics of Human Movement

Angular Kinematics of Human Movement

Linear Kinetics of Human Movement

Angular Kinetics of Human Movement

Human Movement in a Fluid Medium

Filters

Exam 13: Equilibrium and Human Movement

In the human body, most of the lever systems formed by muscles pulling on bones are what class?

The amount of torque which must by 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?

Torque is the angular analogue of what?

Which of the following must be true for an object to be in a state of static equilibrium?

The relative efficiency of a lever is proportional to which of the following?

Which type of equipment provides constant velocity?

Which statement is true regarding moment arm?

Which of the following is/are true regarding dynamic equilibrium?

Running barefoot results in higher joint torque at the knee than using running shoes.

What is the proposed advantage of Nautilus resistance equipment over free weights?

What will happen to the COM of a human body if the arms are raised up overhead?

If force is applied directly to the axis of rotation, torque will equal zero.

A concept indicating a balance between applied forces and inertial forces for a body in motion is called ___________________ ___________________.

Provide 2 examples in sport, dance or rehabilitation where maximum stability is desired and explain various ways this can be accomplished.

A claw-tooth hammer being used to pry up a nail is an example of which class of lever?

The ratio of force arm to resistance arm defines ___________________ __________________.

Explain 1 lever system within the human body, including the lever, axis, force, resistance, class, mechanical advantage and practical advantages.

When net muscle torque and joint movement occur in the same direction, what type of contraction occurs?

A seesaw is an example of which class of lever?

Which of the following will benefit mobility?

What Is Biomechanics

Kinematic Concepts for Analyzing Human Motion

Kinetic Concepts for Analyzing Human Motion

The Biomechanics of Human Bone Growth and Development

The Biomechanics of Human Skeletal Articulations

The Biomechanics of Human Skeletal Muscle

The Biomechanics of the Human Upper Extremity

The Biomechanics of the Human Lower Extremity

The Biomechanics of the Human Spine

Linear Kinematics of Human Movement

Angular Kinematics of Human Movement

Linear Kinetics of Human Movement

Angular Kinetics of Human Movement

Human Movement in a Fluid Medium

Filters

A concept indicating a balance between applied forces and inertial forces for a body in motion is called _ _.

The ratio of force arm to resistance arm defines _ .