At the end of her routine, an ice skater spins through 7.50 revolutions with her arms always fully outstretched at right angles to her body. If her arms are 60.0 cm long, through what arc length distance do the tips of her fingers move during her finish?
Answer to relevant Questions(a) Could a circular pie be cut such that all of the wedge-shaped pieces have an arc length along the outer crust equal to the pie’s radius? (b) If not, how many such pieces could you cut, and what would be the angular ...The polar coordinates of a point are (5.3 m, 32o). What are the point’s Cartesian coordinates? The Earth rotates on its axis once a day and revolves around the Sun once a year. (a) Which is greater, the rotating angular speed or the revolving angular speed? Why? (b) Calculate both angular speeds in rad/s. An airplane pilot is going to demonstrate flying in a tight vertical circle. To ensure that she doesn’t black out at the bottom of the circle, the acceleration must not exceed 4.0g. If the speed of the plane is 50 m/s at ...A block of mass m slides down an inclined plane into a loop-the-loop of radius r (Fig. 7.33). (a) Neglecting friction, what is the minimum speed the block must have at the highest point of the loop in order to stay in the ...
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