![A man pushes on a piano of mass 180 kg so that it slides at a constant velocity of 12.0 cm/s down a ramp that is inclined at 11.0 degrees above the A man pushes on a piano of mass 180 kg so that it slides at a constant velocity of 12.0 cm/s down a ramp that is inclined at 11.0 degrees above the](https://homework.study.com/cimages/multimages/16/untitled6422721969709330290.png)
A man pushes on a piano of mass 180 kg so that it slides at a constant velocity of 12.0 cm/s down a ramp that is inclined at 11.0 degrees above the
![Fájl:Steinway & Sons concert grand piano, model D-274, manufactured at Steinway's factory in Hamburg, Germany.png – Wikipédia Fájl:Steinway & Sons concert grand piano, model D-274, manufactured at Steinway's factory in Hamburg, Germany.png – Wikipédia](https://upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Steinway_%26_Sons_concert_grand_piano%2C_model_D-274%2C_manufactured_at_Steinway%27s_factory_in_Hamburg%2C_Germany.png/1200px-Steinway_%26_Sons_concert_grand_piano%2C_model_D-274%2C_manufactured_at_Steinway%27s_factory_in_Hamburg%2C_Germany.png)
Fájl:Steinway & Sons concert grand piano, model D-274, manufactured at Steinway's factory in Hamburg, Germany.png – Wikipédia
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