MoneyMike42

28.10.2019 • 

Physics

Problem 5: a popular carnival attraction has riders lie on angled cushions while the apparatus spins about the vertical axis like a centrifuge. the 150 lb man lies against the cushion for which the coefficient of static friction is μs = 0.4. if he rotates about the z-axis and lies at an angle of 60° with the horizontal, determine the minimum speed he must spin to avoid sliding off the bottom of the cushion and the maximum speed he must spin to avoid slipping up the top. determine the magnitude of the friction force when the man spins at the average velocity between the minimum and maximum

Ответ:

ayoismeisalex

09.03.2022

Physics

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322 m

Explanation:

y = y₀ + v₀ t + ½ gt²

If we take down to be positive, then:

y = 0 + (5.10) (7.60) + ½ (9.8) (7.60)²

y = 322 m

The skyscraper is 322 m tall.

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