Download presentation

Presentation is loading. Please wait.

Published byMorgan Twaddle Modified over 3 years ago

1
Physics Force

2
What is force? –Any push or pull that tends to cause a change in motion –measured in Newtons (N) or pounds (lbs) 1 N = 0.225 lbs –examples of force gravity (weight) magnetism electricity tension or compression

3
Newton’s Laws of Motion 1st Law - Law of Inertia –An objects motion will remain in motion until acted upon by an outside force. 2nd Law - F = ma –The net force on an object will cause it to accelerate inversely proportional to its mass 3rd Law - Action - Reaction –For every action there is an equal but opposite reaction

4
Equilibrium Forces are balanced (1st law) The net force (resultant force) is 0 There is no change in motion –a = 0 –v is constant

5
Friction Friction (THEORY GIVEN BY GALILEO)is dependant on 2 factors, the roughness of the surfaces (coefficient of friction) in contact and the force pushing the surfaces together (normal force) F fric = F norm Friction may be static (starting or kinetic (moving) You may use subscripts to indicate this. ie. s or k

6
CONTACT FORCES FRICTIONAL TENSIONAL NORMAL AIR RESISTANCE APPLIED SPRING

7
AT A DISTANCE FORCE GRAVITATIONAL ELETRICAL MAGNETIC

8
Applied(Fapp) (Force on hanger) Normal force ( Fnorm ) Friction force (F fric ) Gravity (Fgrav) (Force on plane) Forcex-componenty-component AppliedFapp0 Gravity0-W Friction-F fric 0 Normal0 N

9
Pull(P) (Force on hanger) Normal force ( N ) Friction force (F f ) Weight (W) (Force on plane) Free body diagrams are diagrams that Show all the forces acting on an object Horizontal(equations)

10
Applied (Force on hanger) Normal force Friction force Gravity (Force on plane) W y =Wcos W x =Wsin Forcex-componenty-component AppliedP0 Gravity -Wsin -Wcos Friction-F f 0 Normal0 N F = 0P - F f - Wsin = 0 N - Wcos = 0 Incline(components)

11
Applied (Force on hanger) Normal force Friction force Weight (Force on plane) W y =Wcos W x =Wsin As long as the object is sitting still or at constant acceleration F y = 0 F x = 0 Fapp - F fric - Wsin = 0 Fnorm - Wcos = 0 Fapp = F fric + Wsin Fnorm = Wcos F f = N Incline(equations)

Similar presentations

OK

Chapter 3 Forces & Motion. Newton’s 1 st Law of Motion An object at rest will remain at rest unless acted upon by an unbalanced force. An object in motion.

Chapter 3 Forces & Motion. Newton’s 1 st Law of Motion An object at rest will remain at rest unless acted upon by an unbalanced force. An object in motion.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To ensure the functioning of the site, we use **cookies**. We share information about your activities on the site with our partners and Google partners: social networks and companies engaged in advertising and web analytics. For more information, see the Privacy Policy and Google Privacy & Terms.
Your consent to our cookies if you continue to use this website.

Ads by Google

Pdf to ppt online tool Ppt on forward rate agreement currency Ppt on natural resources for class 4 Ppt on indian stock market Projector view ppt on iphone Download ppt on algebra for class 6 Ppt on environmental degradation vs industrial revolution Ppt on designer babies Ppt on structure of chromosomes in prokaryotes Ppt on the art of war wesley