A 54-kg ice skater pushes off the wall of the rink, giving herself an initial speed of 3.5 m/s . She then coasts with no further effort. The frictional coefficient between skates and ice is 0.024. How far does she go?

Displacement is 72.917 m .

Explanation:

Given :

Mass of cyclist , m = 54 kg .

Initial speed , u = 3.5 m/s .

Frictional coefficient between skates and ice is , .

We need to find its the displacement produced by it .

Frictional Force ,

Therefore, its acceleration ,

We know , by equation of motion .

Hence , this is the required solution .

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the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.