a. Suppose the Sun contracts (collapses) to a pulsar with radius 15 km. Estimate the period of rotation of the pulsar. The period of revolution of the Sun about its axis is 25.38 days (1 day = 24 hours). Compare the kinetic energies of rotation of the pulsar and of the Sun. Figure 1: Question 1(a) A pulsar star system

Inquiry into Physics
8th Edition
ISBN:9781337515863
Author:Ostdiek
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Chapter3: Energy And Conservation Laws
Section: Chapter Questions
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Question 1
a. Suppose the Sun contracts (collapses) to a pulsar with radius 15 km. Estimate the period of rotation
of the pulsar. The period of revolution of the Sun about its axis is 25.38 days (1 day = 24 hours).
Compare the kinetic energies of rotation of the pulsar and of the Sun.
Figure 1: Question 1(a) A pulsar star system
b. A wheel on an extremely low friction slanted surface will slide without rotating. However, if the
same surface is rough and having some friction the wheel will roll down (with rotation). Explain
why, using free body diagram.
Transcribed Image Text:Question 1 a. Suppose the Sun contracts (collapses) to a pulsar with radius 15 km. Estimate the period of rotation of the pulsar. The period of revolution of the Sun about its axis is 25.38 days (1 day = 24 hours). Compare the kinetic energies of rotation of the pulsar and of the Sun. Figure 1: Question 1(a) A pulsar star system b. A wheel on an extremely low friction slanted surface will slide without rotating. However, if the same surface is rough and having some friction the wheel will roll down (with rotation). Explain why, using free body diagram.
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