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

Question

Sanaa Norman

Physics

26 March, 11:47

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

+2

Answers (1)

Know the Answer?

Diamond · Answer 1

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

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

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