EXERCISE 5.1 Spheres A and B are welded to a connecting bar of negligible mass that is mounted obliquely on a shaft that rotates at the constant rate . The mass of the shaft also is negligible, so the center of mass O of this system is situated on the shaft. Thus the system is statically balanced. Evaluate the angular momentum of the two spheres about the center of mass in a stationary frame when the connecting bar is horizontal and when the shaft has rotated by 1° from that position. (Hint: Use O as the origin of frame XYZ. The direction of X is along the shaft. Z direction is vertically upward. Attach frame xyz to the bar and make it coincide with frame XYZ at the instant.)

EXERCISE 5.1 Spheres A and B are welded to a connecting bar of negligible mass that is mounted obliquely on a shaft that rotates at the constant rate . The mass of the shaft also is negligible, so the center of mass O of this system is situated on the shaft. Thus the system is statically balanced. Evaluate the angular momentum of the two spheres about the center of mass in a stationary frame when the connecting bar is horizontal and when the shaft has rotated by 1° from that position. (Hint: Use O as the origin of frame XYZ. The direction of X is along the shaft. Z direction is vertically upward. Attach frame xyz to the bar and make it coincide with frame XYZ at the instant.)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Metrology of Screw Threads

Screw threads are a series of ridges having the profile of a helix. This helix profile runs continuously along the length of a uniform solid or a hollow bar of a circular cross-section at periodic intervals. These helix ridges are also formed over a conical bar. These continuous helical ridges are termed threads.

Question

EXERCISE 5.1 Spheres A and B are welded to a connecting bar of
negligible mass that is mounted obliquely on a shaft that rotates at the
constant rate . The mass of the shaft also is negligible, so the center
of mass O of this system is situated on the shaft. Thus the system is
statically balanced. Evaluate the angular momentum of the two spheres about the center
of mass in a stationary frame when the connecting bar is horizontal and when the shaft
has rotated by 1° from that position.
(Hint: Use O as the origin of frame XYZ. The direction of X is along the shaft. Z direction
is vertically upward. Attach frame xyz to the bar and make it coincide with frame XYZ at
the instant.)

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