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Learning Goal: To understand that the direction of acceleration is in the direction of the change of the velocity, which is unrelated to the direction of the velocity. (Figure 1)The pendulum shown makes a full swing from -π/4 to +π/4. Ignore friction and assume that the string is massless. The eight labeled arrows represent directions to be referred to when answering the following questions. Figure /E/+ E+ 4 4 E- G 1 of 1 B A H Part C What is the direction of a at the moment the pendulum passes position 2? Enter the letter of the arrow that best approximates the direction of a. ► View Available Hint(s) Submit Part D What is the direction of a when the pendulum reaches position 3? Give the letter of the arrow that best approximates the direction of a. ► View Available Hint(s)

Learning Goal: To understand that the direction of acceleration is in the direction of the change of the velocity, which is unrelated to the direction of the velocity. (Figure 1)The pendulum shown makes a full swing from -π/4 to +π/4. Ignore friction and assume that the string is massless. The eight labeled arrows represent directions to be referred to when answering the following questions. Figure /E/+ E+ 4 4 E- G 1 of 1 B A H Part C What is the direction of a at the moment the pendulum passes position 2? Enter the letter of the arrow that best approximates the direction of a. ► View Available Hint(s) Submit Part D What is the direction of a when the pendulum reaches position 3? Give the letter of the arrow that best approximates the direction of a. ► View Available Hint(s)

University Physics Volume 1
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter6: Applications Of Newton's Laws
Section: Chapter Questions
Problem 76P: The CERN particle accelerator is circular with a circumference of 7.0 km. (a) What is the...
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Learning Goal: To understand that the direction of acceleration is in the direction of the change of the velocity, which is unrelated to the direction of the velocity. (Figure 1) The pendulum shown makes a full swing from -π/4 to +π/4. Ignore friction and assume that the string is massless. The eight labeled arrows represent directions to be referred to when answering the following questions. Figure √El+ 71 E- F 1 of 1 B A H Part C What is the direction of a at the moment the pendulum passes position 2? Enter the letter of the arrow that best approximates the direction of a. ► View Available Hint(s) Submit Part D What is the direction of a when the pendulum reaches position 3? Give the letter of the arrow that best approximates the direction of a. ► View Available Hint(s)
Transcribed Image Text:Learning Goal: To understand that the direction of acceleration is in the direction of the change of the velocity, which is unrelated to the direction of the velocity. (Figure 1) The pendulum shown makes a full swing from -π/4 to +π/4. Ignore friction and assume that the string is massless. The eight labeled arrows represent directions to be referred to when answering the following questions. Figure √El+ 71 E- F 1 of 1 B A H Part C What is the direction of a at the moment the pendulum passes position 2? Enter the letter of the arrow that best approximates the direction of a. ► View Available Hint(s) Submit Part D What is the direction of a when the pendulum reaches position 3? Give the letter of the arrow that best approximates the direction of a. ► View Available Hint(s)
Expert Solution
Step 1

C)

At position 2, there is no tangential acceleration. There is only centripetal acceleration which acts toward the center. So, the direction of the acceleration at position 2 will be in the upward direction i.e. toward C.

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