Physics Force Notes

1. A book is at rest on a tabletop. A free-body diagram for this situation looks like this:

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Return to on-line Force Description List 2. A girl is suspended motionless from the ceiling by two ropes. A free-body diagram for this situation looks like this:

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Return to on-line Force Description List 3. An egg is free-falling from a nest in a tree. Neglect air resistance. A free-body diagram for this situation looks like this:

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Return to on-line Force Description List 4. A flying squirrel is gliding (no wing flaps) from a tree to the ground at constant velocity. Consider air resistance. A free-body diagram for this situation looks like this:

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Return to on-line Force Description List 5. A rightward force is applied to a book in order to move it across a desk with a rightward acceleration. Consider frictional forces. Neglect air resistance. A free-body diagram for this situation looks like this:

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Return to on-line Force Description List 6. A rightward force is applied to a book in order to move it across a desk at constant velocity. Consider frictional forces. Neglect air resistance. A free-body diagram for this situation looks like this:

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Return to on-line Force Description List 7. A college student rests a backpack upon his shoulder. The pack is suspended motionless by one strap from one shoulder. A free-body diagram for this situation looks like this:

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Return to on-line Force Description List 8. A skydiver is descending with a constant velocity. Consider air resistance. A free-body diagram for this situation