ballet dancer

A 57.0 kg ballet dancer stands on her toes during a performance with four square inches (26.0 cm2) in contact with the floor. What is the pressure exerted by the floorover the area of contact in the following cases?
(a) if the dancer is stationary
1 Pa
(b) if the dancer is leaping upwards with an acceleration of 3.00 m/s2
2 Pa


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