Segments' Gravity and Center of Mass Quiz

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According to Newton's First Law of Motion, what will happen to a body at rest when no external force acts upon it?

It will remain at rest. (correct)

It will accelerate.

It will start moving.

It will move at constant velocity.

What is the condition for an object to be in dynamic equilibrium?

Moving at constant velocity.

Remaining stationary.

Acted upon by unbalanced forces.

Acted upon by balanced forces. (correct)

In Newton's Second Law of Motion, what is the relationship between acceleration and the net force acting on a body?

Acceleration is directly proportional to the net force. (correct)

Acceleration is inversely proportional to the net force.

Acceleration is proportional to the square of the net force.

Acceleration is unrelated to the net force.

What type of equilibrium occurs when an object is at rest and acted upon by balanced forces?

Static equilibrium Signup and view all the answers

What does Newton's Third Law of Motion state about action and reaction?

Action and reaction forces are always equal in magnitude and opposite in direction. Signup and view all the answers

Which law of motion describes the scenario where a body in uniform motion continues moving at that speed unless acted upon by an external force?

Newton's First Law Signup and view all the answers

Which muscle can generate more force among the tibialis posterior, rectus femoris, and deltoid muscles?

Soleus Signup and view all the answers

What is the anatomical term for motion that occurs in a circle around an axis?

Rotatory motion Signup and view all the answers

What is the term used to describe the number of planes within a joint that moves?

Degrees of freedom Signup and view all the answers

Which axis of rotation is associated with lateral rotation and medial rotation?

Mediolateral / x axis Signup and view all the answers

Which type of arthrokinematics involves spin movement at a joint?

Spin Signup and view all the answers

In which cardinal plane does abduction and adduction occur?

Frontal / Coronal / XY Plane Signup and view all the answers

What type of forces always act on the same segment, in the same plane, and in the same line?

Linear force systems Signup and view all the answers

Which force leads to the separation of joint surfaces?

Distractive forces Signup and view all the answers

What is the main characteristic of tensile forces?

Equal in magnitude Signup and view all the answers

Which type of forces have an action line parallel to contacting surfaces?

Friction forces Signup and view all the answers

What is the special case of torque where rotation of a segment around its long axis occurs?

Torsional moments Signup and view all the answers

Which type of force potentially exists on an object whenever there is a contact force on the object?

Shear force Signup and view all the answers

What is the force that passes through the Center of Mass (CoM)?

Work force Signup and view all the answers

'Anatomic pulleys' redirect muscle force to make actions easier by:

Increasing the moment arm Signup and view all the answers

'Parallel force systems' involve two or more forces applied on the same object that are:

Parallel to each other Signup and view all the answers

Which condition ensures equilibrium in vertical forces?

Vertical Forces = 0 Signup and view all the answers