How can I move a chair with no external forces acting on it?

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If I sit on a chair with my legs off the ground and I suddenly jerk my body forward, I move the chair forward. Why am I able to do this? Static friction might be a factor but if both the chair and I are one system how did I start moving in the first place? Are there any other factors at play besides static friction? any input is appreciated, thanks.

In: Physics

5 Answers

Anonymous 0 Comments

Because you push off the chair which is solid on the ground then use your greater inertia to put the chair with you. The ground provides the counter force to your aftions

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