A pendulum bob is attached to a string and allowed to swing. Which of the following statements is true with correct reasoning about the magnitude of the force the string exerts on the bob Fs on B and the magnitude of the force Earth exerts on the bob FE on B at the very bottom of the pendulum's swing? ΟΟΟ Ο FS on BFE on B because the bob is moving at a constant speed at that point so the forces exerted on it must be balanced. FS on BFE on B because the string would not be able to support the bob if it were not. FS on BFE on B because the bob is accelerating upward at the bottom of its swing. FS on BFE on B because of Newton's 3rd Law

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Chapter9: Linear Momentum And Collisions
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A pendulum bob is attached to a string and allowed to swing. Which of the following statements is true with correct reasoning about the magnitude of
the force the string exerts on the bob Fs on B and the magnitude of the force Earth exerts on the bob FE on B at the very bottom of the pendulum's
swing?
FS on B = FE on B because the bob is moving at a constant speed at that point so the forces exerted on it must be balanced.
FS on B > FE on B because the string would not be able to support the bob if it were not.
FS on B > FE on B
because the bob is accelerating upward at the bottom of its swing.
Fs on B=FE on B because of Newton's 3rd Law
Transcribed Image Text:A pendulum bob is attached to a string and allowed to swing. Which of the following statements is true with correct reasoning about the magnitude of the force the string exerts on the bob Fs on B and the magnitude of the force Earth exerts on the bob FE on B at the very bottom of the pendulum's swing? FS on B = FE on B because the bob is moving at a constant speed at that point so the forces exerted on it must be balanced. FS on B > FE on B because the string would not be able to support the bob if it were not. FS on B > FE on B because the bob is accelerating upward at the bottom of its swing. Fs on B=FE on B because of Newton's 3rd Law
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