josealejandroalamo
contestada

A man pushes a grand piano along a level stage with 380 N force that is 15° above the horizontal. The piano
moves 4.6 m in 9.5 seconds. What is the work he does on the piano? (Round your answer to two significant
figures

Respuesta :

Chelboy

Answer:1688.393 joules

Explanation:

force along 15°(f) =380N

Φ=15°

Distance=4.6m

Time=9.5s

work=horizontal component force(F) x distance

Horizontal component force=f x cosΦ

Horizontal component of force=380 x cos15

Horizontal component of force =380x0.9659

Horizontal component of force=367.042N

Work=force horizontal component x distance

Work=367.042 x 4.6

Work=1688.393

Work=1688.393 joules

Otras preguntas