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July 29, 2014

Homework Help: physics

Posted by Sandhya on Thursday, February 18, 2010 at 6:04am.

Imagine yourself seated on a wheeled desk chair at your desk. Consider friction forces between the chair and the floor to be negligible. However, the friction forces between the desk and the floor are not negligible. When sitting at rest, you push horizontally against the desk, and the chair rolls backward away from the desk. (a) Which force was responsible for your acceleration. (b) What is the reaction force to the force that caused your acceleration? (c)Explain why the desk did not accelerate. Does this violate Newton’s third law? Explain.

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