Unit 5: Work, Energy and Power
Problem Set C
A physics teacher does 36.2 Joules of work on a 2.81-kg pile of snow to both lift it off the ground and to set it into motion. The pile of snow leaves the shovel with a speed of 2.1 m/s. What is the height (in m) of the snow when it leaves the shovel? Enter your answer accurate to the third decimal place.
0.5 m vi2 + m g h i + F d cos = 0.5 m vf2 + m g h f
General information about work and energy problems is described on the Set C Overview page.
A detailed discussion of how to analyze physical situations using work-energy bar charts is provided online at The Physics Classroom.
A detailed description of the work-energy relationships for situation in which external forces are doing work is provided online at The Physics Classroom.
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