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(Figure 1)A roller-coaster car may be represented by a block of mass 50.0 kg. The car is released from rest at a height h = 54.0 m above the ground and slides along a frictionless track. The car encounters a loop of radius R = 18.0 m at ground level, as shown. As you will learn in the course of this problem, the initial height 54.0 m is great enough so that the car never loses contact with the track. Figure Part A h R Find the kinetic energy K of the car at the top of the loop. Express your answer numerically, in joules. ▸ View Available Hint(s) K-8820 J Submit Previous Answers Part B Correct 1 of 1 Find the minimum initial height hmin at which the car can be released that still allows the car to stay in contact with the track at the top of the loop. Express your answer numerically, in meters. ▸ View Available Hint(s) ΜΕ ΑΣΦ ?

(Figure 1)A roller-coaster car may be represented by a block of mass 50.0 kg. The car is released from rest at a height h = 54.0 m above the ground and slides along a frictionless track. The car encounters a loop of radius R = 18.0 m at ground level, as shown. As you will learn in the course of this problem, the initial height 54.0 m is great enough so that the car never loses contact with the track. Figure Part A h R Find the kinetic energy K of the car at the top of the loop. Express your answer numerically, in joules. ▸ View Available Hint(s) K-8820 J Submit Previous Answers Part B Correct 1 of 1 Find the minimum initial height hmin at which the car can be released that still allows the car to stay in contact with the track at the top of the loop. Express your answer numerically, in meters. ▸ View Available Hint(s) ΜΕ ΑΣΦ ?

Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter7: Conservation Of Energy
Section: Chapter Questions
Problem 81P: Jane, whose mass is 50.0 kg, needs to swing across a river (having width D) filled with...
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(Figure 1)A roller-coaster car may be represented by a block of mass 50.0 kg. The car is released from rest at a height h = 54.0 m above the ground and slides along a frictionless track. The car encounters a loop of radius R = 18.0 m at ground level, as shown. As you will learn in the course of this problem, the initial height 54.0 m is great enough so that the car never loses contact with the track. Figure Part A h R M Find the kinetic energy K of the car at the top of the loop. Express your answer numerically, in joules. ▸ View Available Hint(s) K = 8820 J Submit Previous Answers Part B Correct 1 of 1 Find the minimum initial height hmin at which the car can be released that still allows the car to stay in contact with the track at the top of the loop. Express your answer numerically, in meters. ▸ View Available Hint(s) ΕΧΕΙ ΑΣΦ hmin = 72.0 ? m Submit Previous Answers Request Answer × Incorrect; Try Again
Transcribed Image Text:(Figure 1)A roller-coaster car may be represented by a block of mass 50.0 kg. The car is released from rest at a height h = 54.0 m above the ground and slides along a frictionless track. The car encounters a loop of radius R = 18.0 m at ground level, as shown. As you will learn in the course of this problem, the initial height 54.0 m is great enough so that the car never loses contact with the track. Figure Part A h R M Find the kinetic energy K of the car at the top of the loop. Express your answer numerically, in joules. ▸ View Available Hint(s) K = 8820 J Submit Previous Answers Part B Correct 1 of 1 Find the minimum initial height hmin at which the car can be released that still allows the car to stay in contact with the track at the top of the loop. Express your answer numerically, in meters. ▸ View Available Hint(s) ΕΧΕΙ ΑΣΦ hmin = 72.0 ? m Submit Previous Answers Request Answer × Incorrect; Try Again
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