A 173-lb snowboarder has speed v= 15 ft/sec when in the position shown on the halfpipe. Determine the normal force on his snowboard and the magnitude of his total acceleration at the instant depicted. Use a value HK = 0.06 for the coefficient of kinetic friction between the snowboard and the surface. Neglect the weight of the snowboard and assume that the mass center G of the snowboarder is 2.2 feet from the surface of the snow. 27° G 21' 21'

A 173-lb snowboarder has speed v= 15 ft/sec when in the position shown on the halfpipe. Determine the normal force on his snowboard and the magnitude of his total acceleration at the instant depicted. Use a value HK = 0.06 for the coefficient of kinetic friction between the snowboard and the surface. Neglect the weight of the snowboard and assume that the mass center G of the snowboarder is 2.2 feet from the surface of the snow. 27° G 21' 21'

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

A 173-lb snowboarder has speed v = 15 ft/sec when in the position shown on the halfpipe. Determine the normal force on his
snowboard and the magnitude of his total acceleration at the instant depicted. Use a value HK = 0.06 for the coefficient of kinetic
friction between the snowboard and the surface. Neglect the weight of the snowboard and assume that the mass center G of the
snowboarder is 2.2 feet from the surface of the snow.
27°
G
21'
Answers
N =
a =
i
i
21'
lb
ft/sec²

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