A 380-kg piano slides 2.9 m down a 25° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure here below). Determine: (a) the force exerted by the man (b) the work done on the piano by the man (c) the work done on the piano by the force of gravity, and (d) the net work done on the piano. Ignore friction

A 380-kg piano slides 2.9 m down a 25° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure here below). Determine: (a) the force exerted by the man (b) the work done on the piano by the man (c) the work done on the piano by the force of gravity, and (d) the net work done on the piano. Ignore friction

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter9: Energy In Nonisolated Systems

Section: Chapter Questions

Problem 17PQ

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