5 Newtons Third Law of Motion Force as
- Slides: 23
5 Newton’s Third Law of Motion • • Force as an interaction Newton’s 3 rd Law Systems Vectors and Vector Components
Forces and Interactions • inter = between • all forces are interactions between masses • each mass feels same size force
What forces act on the man? Draw a Force Diagram for him.
Newton’s 3 rd Law of Motion • Whenever one object exerts a force on a second object, the second object exerts an equal and oppositely directed force on the first.
Force-Pairs in Action
Systems • forces external to the system determine the systems acceleration • systems are defined so unknown forces can be determined, e. g. , tension can be determined below
What external forces act on this system?
Action and Reaction
Summary of Newton’s Laws • First: Law of Inertia • Second: Fnet = ma • Third: Forces occur in pairs (equal size, opposite direction)
Force Diagram each object. Which has greater acceleration when released?
• Page 21, 22 in Practicing Physics!!!
Vectors • magnitude and direction • represented by arrows • examples: force, velocity, and displacement • added to determine net force • addition is done tail-to-head • applies to velocity
Net Force as Vector Addition
Diagonal of Square is 1. 41 times its sides
Which Plane has Highest Ground Speed?
Components of Vectors • component = part • horizontal part is the “x component” • vertical part is the “y component”
Which strings have greater tension?
Practical Vector Addition
Another Use of Components
Summary • All forces are interactions, i. e. , part of a pair of forces • Newton’s 3 rd Law: pairs have equal size opposite direction • Systems are defined to determine unknown forces • Vectors, Vector Components, Parallelogram Rule
Practicing physics • Do Page 27 • Refer to page 26 to review parallelogram rule of vector addition
- Newton’s 3rd law
- Newton's third law
- Newtons third law of motion
- Describe newtons third law
- Newton's third law of thermodynamics
- Newton first law
- Cosa afferma la legge di gravitazione universale
- Newton's first law and second law and third law
- Si unit of newton's first law
- Newtons 3 rd law of motion
- Newtons 3 rd law of motion
- Newtons 3 rd law of motion
- Newtons first law of motion meme
- Newtons 3 rd law of motion
- Newton's third law rockets
- Newtons 3 rd law of motion
- Newton's first law of motion
- Second law of newton
- Examples of newton's second law of motion
- Newtons law of motion
- Newton's first law of motion statement
- Newtons third lw
- Newtons first aw
- Newton's first law