Choose the incorrect statement O a. A couple is usually balance by a single force. O b. The unit of couple is Nmm C. A couple consist of a pair of two equal and unlike parallel forces. O d. A couple is unable to produce a straight-line motion. The second moment of an area about an axis is called O a. inertia O b. centroid O c. moment of force O d. moment of inertia

Choose the incorrect statement O a. A couple is usually balance by a single force. O b. The unit of couple is Nmm C. A couple consist of a pair of two equal and unlike parallel forces. O d. A couple is unable to produce a straight-line motion. The second moment of an area about an axis is called O a. inertia O b. centroid O c. moment of force O d. moment of inertia

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Mario spins with arms outstretched holding dumbbells. In accord with angular momentum conservation we know that if he pulls his arms inward, rotational rate will increase. And we know that if he could extend his arms farther, rotational rate would decrease. But suppose he does neither, and simply drops the dumbbells. Then his rotational rate would A. increase. B. decrease. C. remain unchanged.
4. Describe what is meant by moment of inertia. What variables does it depend on? What role does it play?
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34. The moment of inertia of an object of mass 2m is 8ma? its radius of gyration is 3 2a A. 3 4a? C. 3 D. IV3 2a B.