Solution Found!
Consider a bob attached by a string, a simple pendulum,
Chapter , Problem 118TAD(choose chapter or problem)
Consider a bob attached by a string, a simple pendulum, that swings to and fro. (a) Why doesn’t the tension force in the string do work on the pendulum? (b) Explain, however, why the force due to gravity on the pendulum at nearly every point does do work on the pendulum. (c) What is the single position of the pendulum where “no work by gravity” occurs?
Questions & Answers
QUESTION:
Consider a bob attached by a string, a simple pendulum, that swings to and fro. (a) Why doesn’t the tension force in the string do work on the pendulum? (b) Explain, however, why the force due to gravity on the pendulum at nearly every point does do work on the pendulum. (c) What is the single position of the pendulum where “no work by gravity” occurs?
ANSWER:
Step 1 of 3
a) The tension in the string is counterbalanced by the gravity. Hence tension force in the string does not work on a pendulum.