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July 27, 2015

Homework Help: physics

Posted by Anonymous on Tuesday, November 27, 2012 at 1:27pm.

The largest grand piano in the world is really grand. Built in London, it has a mass of 1.25 ◊ 103 kg. Suppose
a pianist finishes playing this piano and pushes herself from the piano so that she rolls backwards with a
speed of 1.4 m/s. Meanwhile, the piano rolls forward so that in 4.0 s it travels 24 cm at constant velocity.
Assuming the stool that the pianist is sitting on has a negligible mass, what is the pianistís mass?

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