Answer to Question #135514 in Mechanics | Relativity for Rhaven

Question

A 100-N piano is moved 20 m across a floor by a horizontal force of 35 N. Find the coefficient of friction. What happens to the energy ?

Answer 1

$f_r=\mu N$

$\mu=\frac{f_r}{N}$

$=\frac{35}{100}=0.35$

Energy goes into heat due to friction