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by: Daria

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Nonconservative Forces and Examples Physics 2070

Marketplace > Clemson University > Physics > Physics 2070 > Nonconservative Forces and Examples
Daria
Clemson
GPA 4.0

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These notes cover nonconservative forces and include 5 different examples of problems with the work on how to complete them.
COURSE
General Physics
PROF.
Pooja Puneet
TYPE
Class Notes
PAGES
2
WORDS
CONCEPTS
General Physics, Physics, nonconservative forces, Examples, forces
KARMA
25 ?

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This 2 page Class Notes was uploaded by Daria on Thursday October 13, 2016. The Class Notes belongs to Physics 2070 at Clemson University taught by Pooja Puneet in Spring 2016. Since its upload, it has received 3 views. For similar materials see General Physics in Physics at Clemson University.

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Date Created: 10/13/16
Nonconservative Forces Work Done By Nonconservative Forces ● In the presence of non-conservative forces, the total mechanical energy is not conserved: ○ W totalW conservativnonconservative ○ W = − ΔU + W = ΔK total nc ○ W nc ΔK + ΔU = ΔE Examples ● What height H must we release the car if it just makes it around the circular loop of radius R? ● A shot put (m = 7.26 kg) is shot at an angle of 43.4 degrees and released from a height of 1.82 m above ground level then it lands with a final velocity of 20m/s. It lands a horizontal distance of 17.7 m from the release point. With what speed does the shot put leave the thrower’s hand? ● A block of mass m1 = 2.40 kg is connected to a second block of mass m2 = 1.80 kg. When the blocks are released, they move through a distance d = 0.500 m at which point m2 hits the floor. The coefficient of friction between m1 and the table is 0.450. Find the speed of the blocks just before m2 lands. ● A 20.0 kg child slides down a 1.0m long slide inclined at 40.0o. The child starts at rest on the top and experiences a frictional force of 5.00 N. What is the speed of the child at the bottom of the slide? ● An 80 kg jogger starts from rest and runs uphill in a stiff breeze. At the top of the hill the jogger has done a work W = 1.8 x 104 J, air resistance has done a work W = nc1 nc2 -4400 J, and the jogger’s speed is 3.0 m/s. Find the height of the hill.

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