Answer to Question #89667 in Mechanics | Relativity for James

Mechanics | Relativity

Question #89667

A 10kg box accelerates down a slope at 5m/s what is the magnitude of friction?

The incline is 15 degrees.

Expert's answer

A box moves with constant speed of 5 m/s. Thus,

"ma=mg \\sin{15}-F_f=0"

"F_f=mg \\sin{15}=(10)(9.8) \\sin{15}=25\\ N"

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