Explanation Section1 To determine: Total energy of skier at the top. Answer: Total energy of skier at the top is m g R . Given Info: Acceleration due to gravity is g . The given figure is shown below. Figure-1 Formula of total energy of the system when skier is at the top is. ( E Total ) 1 = m g R ( E Total ) 1 is the total energy of the system when skier is at the top. m is the mass of the skier g is the acceleration due to gravity. R is the radius of the snow ball. Thus, the total energy of the system when skier is at the top is m g R . Section2 To determine: Total energy of the skier when she is at an angle of α to the vertical. Answer: Total energy of the skier when she is at an angle of α to the vertical is m g R cos α + 1 2 m v 2 . Given Info: Acceleration due to gravity is g . Formula of total energy of the skier when she is at an angle of α to the vertical is. ( E Total ) 2 = m g ( R − R cos α ) + 1 2 m v 2 ( E Total ) 2 is the total energy of the system when block A strikes to the floor. v is the velocity of skier. α is the angle of skier with vertical. Thus, total energy of the skier when she is at an angle of α to the vertical is m g R cos α + 1 2 m v 2 . Section3 To determine: The velocity of skier whet she lose the contact with snowball. Answer: The velocity of skier whet she loses the contact with snowball is 2 ( m g R − g R cos α ) . Given Info: Acceleration due to gravity is g . Apply the energy conservation

University Physics with Modern Physics, Books a la Carte Plus Mastering Physics with eText -- Access Card Package (14th Edition)

14th Edition

ISBN: 9780133983623

Author: Hugh D. Young, Roger A. Freedman

Publisher: PEARSON

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Chapter 7, Problem 7.55P

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The angle α at which the skier lose the contact with the snowball.

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Chapter 7, Problem 7.54P

Chapter 7, Problem 7.56P

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Chapter 7 Solutions

University Physics with Modern Physics, Books a la Carte Plus Mastering Physics with eText -- Access Card Package (14th Edition)

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The angle α at which the skier lose the contact with the snowball.

Solution Summary: The author explains the formula of total energy of the system when skier is at the top.

The angle α at which the skier lose the contact with the snowball.

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Chapter 7 Solutions