Chapter Three- principles of physics for Massage

22 terms by Emmeluv1 

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A branch of physics that studies the behavior of objects in the physical world

Newton's first law of motion is known as the:

Law of inertia

Law of inertia

Newton's law that states that everybody continues in its state of uniform motion in a right line unless it is compelled to change that state by forces impressed upon it

The law of inertia is also known as

Newton's first Law of motion

Second Law of Motion

force = mass x acceleration. at any instant the acceleration of a body is directly proportional to the force applied to it and inversely proportional to it's mass F=MA

Third Law of motion is known as:

The law of action and reaction

The Law of Action and Reaction

Newton's law that states if one body exerts a force on the second, the second exerts an equal and opposite force on the first.

Newton's 1st Law

states that an object continues in its state of rest or of uniform motion unless compelled to change that state by an external force

Newton's 2nd Law

if a net force acts on an object, it will cause an acceleration of that object; F=MA

Newton's 3rd Law

for every action there is an equal and opposite reaction

law of structural alignment

structure reflects the relationships and connections within the body. No muscles work alone

Dynamic alignment is also known as

The law of structural alignment

Law of structural alignment is also know as:

dynamic alignment


this means that you have found a center of physical balance. Physically and mentally


this influences the body and mind. The rhythm and rate of this reflects & helps create your physical condition. Can indicate emotional and mental activity. Voluntary manipulation of this can influence and help support emotional and mental status.

Base of Support

a general suggestion to find this width is to assume a standing position with feet hip width apart and on foot slightly in front of the other. Consider this when striving for optimum body mechanics

Example of Newton's first law

what law is this? if a client has an adhesion, chances are that this adhesion will remain unless some kind of input (massage, movement, etc.) is put upon it

Example of Newton's second Law

what law is this? The bigger a body you are working with is, the more force you will be required to use to invoke a change.

Example of Newton's third law

what law is this? when you push against an object, like a living human body, the first reaction of the tissues is to push you back out.

Example of law of structural alignment

what law is this? Contraction of the bicep requires the triceps to relax.

List four guidelines to keep in mind for dynamic alignment

1. feet facing in direction of stroke; 2. keep spinal curves in tact; 3. line up body directly behind the hands, 4. keep thumb close to fingers.

List six guidelines to effective body mechanics

1. feet facing in direction of stroke; 2. keep spinal curves in tact; 3. line up body directly behind the hands, 4. keep thumb close to fingers; 5 avoid hyper extending the knees, feel shoulder blades swing freely, 6. initiation 7. breathing, 8. ergonomics, 9. keep joints stacked, 10. bend at the knee 11. don't cross mid-line, 12. bilateral weight disbursement.

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