Part of GED® Science: Physical Science
GED® Science: Work, Power & Simple Machines (Deep Dive)
A focused companion course on scientific work, power, mechanical advantage, simple machines, ramps, levers, pulleys, efficiency, and GED®-style formula/data questions.
📚 Course Curriculum
In science, work happens only when a force moves an object a distance in the direction of the force:. Work is measured in joules (J). …
Open trial session →Power measures the rate of doing work:. Power is measured in watts (W). Two people can do the same work lifting boxes, but the person …
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A simple machine makes work easier by changing the size or direction of a force. The six classic machines are lever, pulley, wheel and axle, …
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A ramp or inclined plane lets you lift an object using less force over a longer distance. A lever rotates around a fulcrum. A pulley …
Open trial session →Real machines lose some input energy to friction and heat, so useful output work is less than input work. Efficiency is:. Reading machine data (GED® …
Open trial session →Course Syllabus
Course Outcomes
📝 Practice Questions
10 interactive questions with instant feedback and explanations.
Enroll for free to unlock the full practice bank after the trial sessions.