Q4. The uniform slender bar is initially at rest on a smooth horizontal surface when a force F is applied normal to the bar at point A. Point A is observed to have an initial acceleration aa of 20 m/ s2 in the direction normal to the rod (as shown). The bar has a corresponding angular acceleration of a of 18 rad/s² (anti-clockwise, as shown). a) Draw a FBD of the bar (top view is enough). b) By using "F=ma" and/or "sum of all moments = I alpha" about some point, determine the distance b. Hint: Do “F=mac" and "sum of all moments = I alpha" also about the center of mass C. To get acceleration of C, use acceleration formulas from previous HW to relate aa and a to ac. 1.6 m

Q4. The uniform slender bar is initially at rest on a smooth horizontal surface when a force F is applied normal to the bar at point A. Point A is observed to have an initial acceleration aa of 20 m/ s2 in the direction normal to the rod (as shown). The bar has a corresponding angular acceleration of a of 18 rad/s² (anti-clockwise, as shown). a) Draw a FBD of the bar (top view is enough). b) By using "F=ma" and/or "sum of all moments = I alpha" about some point, determine the distance b. Hint: Do “F=mac" and "sum of all moments = I alpha" also about the center of mass C. To get acceleration of C, use acceleration formulas from previous HW to relate aa and a to ac. 1.6 m

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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Question

Please help. This problem involves angular acceleration and linear acceleration of a bar. Thank you.

Q4. The uniform slender bar is initially at rest on a smooth horizontal surface when a force F is
applied normal to the bar at point A. Point A is observed to have an initial acceleration aa of 20 m/
s2 in the direction normal to the rod (as shown). The bar has a corresponding angular acceleration
of a of 18 rad/s² (anti-clockwise, as shown).
a) Draw a FBD of the bar (top view is enough).
b) By using "F=ma" and/or "sum of all moments = I alpha" about some point, determine the
distance b.
Hint: Do "F=mac" and "sum of all moments = I alpha" also about the center of mass C. To get
acceleration of C, use acceleration formulas from previous HW to relate aa and a to ac.
1.6 m

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