7) A pendulum which weighs 3.86 lb and has a cord length of 10 in. is released from rest when the cord is horizontal as shown. When the mass reaches the bottom of its path it strikes a spring with a modulus of 100 lb per in. De- termine the maximum kinetic energy of the mass. 10" Fus 9) For the pendulum in Question 7, what is the tension in the cord just before the mass contacts the spring. 8) For the pendulum in Question 7, what is the maximum compression of the spring.

7) A pendulum which weighs 3.86 lb and has a cord length of 10 in. is released from rest when the cord is horizontal as shown. When the mass reaches the bottom of its path it strikes a spring with a modulus of 100 lb per in. De- termine the maximum kinetic energy of the mass. 10" Fus 9) For the pendulum in Question 7, what is the tension in the cord just before the mass contacts the spring. 8) For the pendulum in Question 7, what is the maximum compression of the spring.

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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Question

7-9 pls

7) A pendulum which weighs 3.86 lb and has a cord length
of 10 in. is released from rest when the cord is horizontal
as shown. When the mass reaches the bottom of its path
it strikes a spring with a modulus of 100 lb per in. De-
termine the maximum kinetic energy of the mass.
10"
Fus
9) For the pendulum in Question 7, what is the tension in the cord just before the
mass contacts the spring.
8) For the pendulum in Question 7, what is the maximum
compression of the spring.

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Step 1: 7) Evaluate maximum kinetic energy of pendulum.

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Step 2: 8) Evaluate maximum compression in spring.

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Step 3: 9) Draw free body diagram of pendulum just before impact.

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