Explanation Given: The provided position vector is, r ( t ) = a cos ω t i + a sin ω t j Formula Used: The differentiation formula as: d d t x n = n x n − 1 The tangential and normal component of acceleration are shown below: a T = v . a ‖ v ‖ if, r ( t ) = a i+b j+c k then ||r(t)||= a 2 + b 2 + c 2 and a N = ‖ v × a ‖ ‖ v ‖ The unit tangent and normal vectors are: T ( t ) = r ' ( t ) ‖ r ' ( t ) ‖ and N ( t ) = T ' ( t ) ‖ T ' ( t ) ‖ Calculation: Consider the provided position vector is, r ( t ) = a cos ω t i + a sin ω t j Now, differentiate r ( t ) as shown below, r ' ( t ) = − a w sin ω t i + a w cos ω t j Therefore, magnitude of the velocity vector is calculated as shown below, ‖ r ' ( t ) ‖ = ‖ − a ω sin ω t i + a ω cos ω t j ‖ = a 2 ω 2 sin 2 ω t + a 2 ω 2 cos 2 ω t = a 2 ω 2 ( sin 2 ω t + cos 2 ω t ) = a 2 ω 2 = a ω Therefore, find the unit tangent vector, T ( t ) = r ' ( t ) ‖ r ' ( t ) ‖ = − a ω sin ω t i + a ω cos ω t j a ω = − sin ω t i + cos ω t j Now, differentiate T ( t ) with respect to t as shown below, T ′ ( t ) = − ω cos ω t i − ω sin ω t j then calculate the magnitude of the vector T ′ ( t ) , ‖ T ′ ( t ) ‖ = ‖ − ω cos ω t i − ω sin ω t j ‖ = ω 2 sin 2 ω t + ω 2 cos 2 ω t = ω 2 ( sin 2 ω t + cos 2 ω t ) = ω 2 = ω Now, calculate the principal unit normal vector as shown below, N ( t ) = T ' ( t )

11th Edition

ISBN: 9781337275347

Author: Ron Larson, Bruce H. Edwards

Publisher: Cengage Learning

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Chapter 12.4, Problem 31E

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To calculate: The T(t), N(t), aT and aN for an object moving according to position vector r(t)=acosωti+asin ωtj

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Chapter 12.4, Problem 30E

Chapter 12.4, Problem 32E

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The four figures below are...Ch. 12.1 - Prob. 83E Ch. 12.1 - Prob. 84E Ch. 12.1 - Prob. 85E Ch. 12.1 - Prob. 86E Ch. 12.1 - Prob. 87E Ch. 12.1 - Prob. 88E Ch. 12.1 - Prob. 89E Ch. 12.1 - Prob. 90E Ch. 12.2 - Prob. 1E Ch. 12.2 - Prob. 2E Ch. 12.2 - Prob. 3E Ch. 12.2 - Prob. 4E Ch. 12.2 - Prob. 5E Ch. 12.2 - Prob. 6E Ch. 12.2 - Prob. 7E Ch. 12.2 - Prob. 8E Ch. 12.2 - Prob. 9E Ch. 12.2 - Prob. 10E Ch. 12.2 - Prob. 11E Ch. 12.2 - Prob. 12E Ch. 12.2 - Prob. 13E Ch. 12.2 - Prob. 14E Ch. 12.2 - Prob. 15E Ch. 12.2 - Prob. 16E Ch. 12.2 - Prob. 17E Ch. 12.2 - Finding a Derivative In Exercises 11-18, find...Ch. 12.2 - Prob. 19E Ch. 12.2 - Prob. 20E Ch. 12.2 - Higher-Order DifferentiationIn Exercises 1922,...Ch. 12.2 - Prob. 22E Ch. 12.2 - Prob. 23E Ch. 12.2 - Prob. 24E Ch. 12.2 - Prob. 25E Ch. 12.2 - Prob. 26E Ch. 12.2 - Prob. 27E Ch. 12.2 - Prob. 28E Ch. 12.2 - Finding Intervals on Which a Curve Is Smooth In...Ch. 12.2 - Prob. 30E Ch. 12.2 - Prob. 31E Ch. 12.2 - Prob. 32E Ch. 12.2 - Prob. 33E Ch. 12.2 - Prob. 34E Ch. 12.2 - Using Properties of the Derivative In Exercises 35...Ch. 12.2 - Using Properties of the DerivativeIn Exercises 35...Ch. 12.2 - Using Two MethodsIn Exercises 37 and 38, find (a)...Ch. 12.2 - Prob. 38E Ch. 12.2 - Prob. 39E Ch. 12.2 - Prob. 40E Ch. 12.2 - Prob. 41E Ch. 12.2 - Prob. 42E Ch. 12.2 - Prob. 43E Ch. 12.2 - Prob. 44E Ch. 12.2 - Prob. 45E Ch. 12.2 - Finding an Indefinite Integral In Exercises 39-46,...Ch. 12.2 - Prob. 47E Ch. 12.2 - Evaluating a Definite Integral In Exercises 47-52,...Ch. 12.2 - Prob. 49E Ch. 12.2 - Prob. 50E Ch. 12.2 - Evaluating a Definite Integral In Exercises 47-52,...Ch. 12.2 - Prob. 52E Ch. 12.2 - Prob. 53E Ch. 12.2 - Prob. 54E Ch. 12.2 - Prob. 55E Ch. 12.2 - Prob. 56E Ch. 12.2 - Prob. 57E Ch. 12.2 - Finding an Antiderivative In Exercises 53-58, find...Ch. 12.2 - Prob. 59E Ch. 12.2 - Prob. 60E Ch. 12.2 - Prob. 61E Ch. 12.2 - Prob. 62E Ch. 12.2 - Prob. 63E Ch. 12.2 - Prob. 64E Ch. 12.2 - Prob. 65E Ch. 12.2 - Prob. 66E Ch. 12.2 - Prob. 67E Ch. 12.2 - Prob. 68E Ch. 12.2 - Particle MotionA particle moves in the xy-plane...Ch. 12.2 - Particle MotionA particle moves in the yz-plane...Ch. 12.2 - Prob. 71E Ch. 12.2 - Prob. 72E Ch. 12.2 - Prob. 73E Ch. 12.2 - True or False? 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Prob. 16E Ch. 12.5 - Prob. 17E Ch. 12.5 - Investigation Consider the helix represented by...Ch. 12.5 - Prob. 19E Ch. 12.5 - Prob. 20E Ch. 12.5 - Prob. 21E Ch. 12.5 - Prob. 22E Ch. 12.5 - Prob. 23E Ch. 12.5 - Prob. 24E Ch. 12.5 - Prob. 25E Ch. 12.5 - Prob. 26E Ch. 12.5 - Prob. 27E Ch. 12.5 - Prob. 28E Ch. 12.5 - Finding CurvatureIn Exercises 2936, find the...Ch. 12.5 - Prob. 30E Ch. 12.5 - Prob. 31E Ch. 12.5 - Prob. 32E Ch. 12.5 - Prob. 33E Ch. 12.5 - Prob. 34E Ch. 12.5 - Prob. 35E Ch. 12.5 - Prob. 36E Ch. 12.5 - Prob. 37E Ch. 12.5 - Prob. 38E Ch. 12.5 - Prob. 39E Ch. 12.5 - Prob. 40E Ch. 12.5 - Prob. 41E Ch. 12.5 - Prob. 42E Ch. 12.5 - Prob. 43E Ch. 12.5 - Prob. 44E Ch. 12.5 - Prob. 45E Ch. 12.5 - Prob. 46E Ch. 12.5 - Prob. 47E Ch. 12.5 - Prob. 48E Ch. 12.5 - Prob. 49E Ch. 12.5 - Prob. 50E Ch. 12.5 - Prob. 51E Ch. 12.5 - Prob. 52E Ch. 12.5 - Prob. 53E Ch. 12.5 - Prob. 54E Ch. 12.5 - Prob. 55E Ch. 12.5 - Prob. 56E Ch. 12.5 - Prob. 57E Ch. 12.5 - Prob. 58E Ch. 12.5 - Prob. 59E Ch. 12.5 - Prob. 60E Ch. 12.5 - Prob. 61E Ch. 12.5 - Motion of a Particle A particle moves along the...Ch. 12.5 - Prob. 63E Ch. 12.5 - Prob. 64E Ch. 12.5 - Prob. 65E Ch. 12.5 - Speed The smaller the curvature of a bend in a...Ch. 12.5 - Prob. 67E Ch. 12.5 - Prob. 68E Ch. 12.5 - Prob. 69E Ch. 12.5 - Prob. 70E Ch. 12.5 - Curvature Given the polar curve r=ea,a0, use the...Ch. 12.5 - Prob. 72E Ch. 12.5 - Prob. 73E Ch. 12.5 - Prob. 74E Ch. 12.5 - Prob. 75E Ch. 12.5 - Prob. 76E Ch. 12.5 - Prob. 77E Ch. 12.5 - Prob. 78E Ch. 12.5 - Prob. 79E Ch. 12.5 - Prob. 80E Ch. 12.5 - Prob. 81E Ch. 12.5 - Prob. 82E Ch. 12.5 - True or False? 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The T ( t ) , N ( t ) , a T and a N for an object moving according to position vector r ( t ) = a cos ω t i + a sin ω t j

Solution Summary: The author explains how to calculate the T(t) and a_N for an object moving according to position vector.

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To calculate: The T(t), N(t), aT and aN for an object moving according to position vector r(t)=acosωti+asin ωtj

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Chapter 12 Solutions