a. Explanation The sled moves upward on the frictionless inclined surface. The component of acceleration due to gravity along the inclined plane acts in the direction opposite to the direction of the motion and therefore it reduces the speed and finally brings it to rest at a point. Write the expression for component of acceleration due to gravity along the incline as. a = − g sin θ (I) Here, a is the component of the acceleration along the incline, g is the acceleration due to gravity and θ is the angle made by the incline. Write the expression for the Newton’s third equation of the motion for the first sled as. v f 2 = v i 2 + 2 a x Substitute ( − g sin θ ) for a in above equation. v f 2 = v i 2 + 2 ( − g sin θ ) x (II) Here, v f is the final velocity of sled, v i is the initial velocity and x is the displacement of the sled (b) To determine The initial speed of second sled.

Bundle: Physics for Scientists and Engineers with Modern Physics, Loose-leaf Version, 9th + WebAssign Printed Access Card, Multi-Term

9th Edition

ISBN: 9781305932302

Author: Raymond A. Serway, John W. Jewett

Publisher: Cengage Learning

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Chapter 5, Problem 77AP

To determine

The distance travelled by first sled up the incline.

(b)

To determine

The initial speed of second sled.

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Chapter 5, Problem 76AP

Chapter 5, Problem 78AP

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Chapter 5 Solutions

Bundle: Physics for Scientists and Engineers with Modern Physics, Loose-leaf Version, 9th + WebAssign Printed Access Card, Multi-Term

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The distance travelled by first sled up the incline.

Solution Summary: The author calculates the distance travelled by the first sled up the incline. The component of acceleration due to gravity along the inclined plane acts in the direction opposite to the motion.

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The distance travelled by first sled up the incline.

The initial speed of second sled.

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Chapter 5 Solutions