How Do You Calculate Work Done and Heat Energy Generated by Friction on a Ramp?

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SUMMARY

The discussion focuses on calculating the work done and heat energy generated by friction when pushing a 10.0 kg mass up a 7.60 m ramp inclined at 20 degrees, with a coefficient of friction (μ) of 0.170 and a horizontal force of 70.0 N. The correct calculation for heat energy generated by friction is established as 150 J. Key equations utilized include W = Fd for work and F = ma for force, which are essential for solving the problem accurately.

PREREQUISITES
  • Understanding of basic physics concepts such as work, force, and friction.
  • Familiarity with trigonometric functions in the context of inclined planes.
  • Knowledge of Newton's laws of motion, particularly F = ma.
  • Ability to apply the work-energy principle in practical scenarios.
NEXT STEPS
  • Study the concept of frictional force and its calculation on inclined planes.
  • Learn how to derive work done using different forces acting on an object.
  • Explore the relationship between work, energy, and power in physics.
  • Investigate the impact of varying coefficients of friction on work done and heat generated.
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone involved in mechanics, particularly those studying forces and energy transformations in inclined systems.

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Homework Statement


A person pushes a 10.0 kg mass up a 7.60 m long, 20 degree ramp( mu=.170) with a horizontal force of 70.0N. Find the work done by the person and the heat energy generated by friction.
the answer for heat energy i canot get..its supposed to be 150J

Homework Equations


W=Fd
F=ma
P=W/t
v=vo+at


The Attempt at a Solution


[img=http://img80.imageshack.us/img80/4013/helprd8.th.jpg]
a)7.14x70 = 500J
Fx=70N
Fperp=70tan20 ?
Fparalell=70/cos20=74.5N ?
 
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please help both of my problems posted are due tommorow worht marks and I am so lost please !
 

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