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We have 20 ready-to-use problem sets on the topic of Work, Energy, and Power. These problem sets focus on the use of energy principles to mathematically analyze systems involving the motion of objects. Click a link to open a publicly-available problem set.
- Problem Set
This collection of problem sets and problems target student...
- Problem Set
This collection of problem sets and problems target student ability to use energy principles to analyze a variety of motion scenarios.
If an object of mass 2 kg is thrown up from the ground reaches a height of 5 m and falls back to the Earth (neglect the air resistance). Calculate. a) The work done by gravity when the object reaches 5 m height. b) The work done by gravity when the object comes back to Earth.
Review the units of work, energy, force, and distance. Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
Problem : A 10 kg object experiences a horizontal force which causes it to accelerate at 5 m/s2, moving it a distance of 20 m, horizontally. How much work is done by the force? The magnitude of the force is given by F = ma = (10) (5) = 50 N.
The Extra Problems pertain to various aspects of the topic of work, energy, power, the work-energy relationship, and the conservation of mechanical energy. The problems are divided into six separate sets of problems.
Follow along with common work and power example problems and solutions. See how to solve problems when force is applied directly parallel or at an angle.
