In Figure 5.25 how does the magnitude of f relate to the vector sum of mg and N when the shoe is in equilibrium? What occurs if f is less than this sum?

Figure 5.25:

(a) On friction-free ice, only mg and N act on the shoe.

(b) On the wooden board, a force of friction f is present.

(c) At equilibrium, the resultant of N and mg is equal and opposite to f.

Transcribed Image Text:

N, Ice (c) (a) (b) mg mg mg