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Is it possible to choose the value of q (that is non-zero such that the force on q is zero? explain why or why not.
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Is it possible to choose the value of q (that is non-zero such that the force on q is zero? explain why or why not.

User Dotism
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If the force is non-constant, and reverses itself over time, it can give a zero impulse. For example, the spring force would give a zero impulse over one period of oscillation.
User Ofer Lando
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