Homework Help is Here – Start Your Trial Now!
Engineering
Mechanical Engineering
can u give detail for calculation please, some calculations I stuck

can u give detail for calculation please, some calculations I stuck

Elements Of Electromagnetics
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
See similar textbooks
icon
Related questions
Question

can u give detail for calculation please, some calculations I stuck

/2ga sin 0 i.c. angular velocity, w = k + a² do Angular acceleration dt do do OP 2ga do dt (2ga sin 0\- 12 + a² (2ga sin 6' k² + a² /½ = }.x cos 0 x 12 + a² gа cos 0 k² + a² `R C.F. ng b) When the plank has turned through an angle as in the above Figure, the force acting along the plank is the sum of the centrifugal force and the com- ponent of the weight parallel to the plank. i.e. tangential force, F = mo²a + mg sin a 2ga sin a = m.- a + mg sin a 1:2 + a² 1:2 + 3a? = mg sin a. k2 + a? The normal reaction, R, is given by do Ra = I dt mk2 ga cos a * 1:² + a² k* cos a i.e. R= mg 1k² + a² mg sin a F k2 + 3a* k² + a² k2 + 3a? tan a R k2 cos a mg 7:2 + a²
Transcribed Image Text:/2ga sin 0 i.c. angular velocity, w = k + a² do Angular acceleration dt do do OP 2ga do dt (2ga sin 0\- 12 + a² (2ga sin 6' k² + a² /½ = }.x cos 0 x 12 + a² gа cos 0 k² + a² `R C.F. ng b) When the plank has turned through an angle as in the above Figure, the force acting along the plank is the sum of the centrifugal force and the com- ponent of the weight parallel to the plank. i.e. tangential force, F = mo²a + mg sin a 2ga sin a = m.- a + mg sin a 1:2 + a² 1:2 + 3a? = mg sin a. k2 + a? The normal reaction, R, is given by do Ra = I dt mk2 ga cos a * 1:² + a² k* cos a i.e. R= mg 1k² + a² mg sin a F k2 + 3a* k² + a² k2 + 3a? tan a R k2 cos a mg 7:2 + a²
Figure Q7 shows a uniform plank, rests upon a horizontal bench with one end of the bar projecting over the sharp edge of the bench, the bar being at right angles to this edge. The plank is pulled out of horizontally until the centre of gravity overhangs the edge by a distance a, and is then released. The plank rotates about the edge and then slides down. (a) Determine the angular velocity and angular acceleration of the plank after it has turned through an angle O degrees assuming that no sliding has taken place. (b) If the sliding begins when the plank has tuned through an angle a, show that the coefficient of friction, u , is [(k? + 3a?) ------------- tan a. k? where k is the radius of gyration of the plank about its centre of gravity. a Figure Q7, A uniform plank resting upon a horizontal bench. Solution (a) When the plank has rotated through an angle 0, loss in P.E. = gain in K.E. m(k² + a²)w2 |3D i.e. mga sin 0
Transcribed Image Text:Figure Q7 shows a uniform plank, rests upon a horizontal bench with one end of the bar projecting over the sharp edge of the bench, the bar being at right angles to this edge. The plank is pulled out of horizontally until the centre of gravity overhangs the edge by a distance a, and is then released. The plank rotates about the edge and then slides down. (a) Determine the angular velocity and angular acceleration of the plank after it has turned through an angle O degrees assuming that no sliding has taken place. (b) If the sliding begins when the plank has tuned through an angle a, show that the coefficient of friction, u , is [(k? + 3a?) ------------- tan a. k? where k is the radius of gyration of the plank about its centre of gravity. a Figure Q7, A uniform plank resting upon a horizontal bench. Solution (a) When the plank has rotated through an angle 0, loss in P.E. = gain in K.E. m(k² + a²)w2 |3D i.e. mga sin 0
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Numerical Calculations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY
SEE MORE TEXTBOOKS