Applications of Newton's Laws
Applications of Newton's Laws 2070
Popular in General Physics 1
Popular in Physics
verified elite notetaker
This 2 page Class Notes was uploaded by Daria on Tuesday September 20, 2016. The Class Notes belongs to 2070 at Clemson University taught by Amy Pope in Fall 2016. Since its upload, it has received 6 views. For similar materials see General Physics 1 in Physics at Clemson University.
Reviews for Applications of Newton's Laws
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 09/20/16
Frictional Forces ● Kinetic friction: the friction experienced by surfaces sliding against one another ○ The kinetic frictional force depends on the normal force ■ f μ N k k ○ The constant μ k is called he coefficient f ineti riction. ○ Values of μk usually vary etween 0.1 nd epending on the materials that re interacting. ● Static Friction: the static frictional force keeps an object from starting to move after the force isadded o the ystem. ○ The static frictional force has a limit, maximum value, but can be any value from 0 to the maximum depending on what isneeded to keep the system’s sums at zero. Strings nd prings ● Tension ● An ideal pulley isone that simply changes the direction of the tension: there isno mechanical dvantage. ● In real life the tension will vary due to weight of the rope or string. Applying ewton’s Laws ● Strategy ○ Diagram and given variables converted to standard units ○ Draw a free body diagram, identify the positive direction, and acceleration is in the positive direction for each object for a single axis ○ Resolve forces into x and y components (using trigonometry) ○ Include allforces ● An object is in equilibrium when the net forces acting on i equal to zero. This will occur when velocity i ero r onstant. Example ● A box, with a mass of 22kg, is pulled at a constant velocity with a rope that makes an 0 angle f 5 ith he loor the ame friction (μ= 0.4). hat is he tension fthe ope? ● A 100kg box with a weight of 980N hangs on a rope. Find the tension when the box is stationary and at 5m/s upward. ● A sled with a mass of 20kg slides along a frictionless ice at 4.5m/s. It crosses onto a rough patch of snow with friction with force of 12N. How long does itslide before coming to rest?
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'