4.) A force P pulls a series of blocks initially at rest as shown in the figure where all cords are frictionless and incompressible, and all pulleys are frictionless. The 8-kg Block 1 is attached to a 5-kg Block 2. The coefficients of friction between Block 1 and the horizontal surface are 0.38 (static) and 0.27 (kinetic), while between Block 2 and the surface inclined at 28° are 0.40 (static) and 0.31 (kinetic). a. Determine the angle 0 at which Block 1 is being pulled to just get it moving if force P is 71.2 N. b. If the blocks are pulled with a force of 100 N at the same angle, how fast are the blocks moving after 3 seconds? c. What is the total distance travelled?

4.) A force P pulls a series of blocks initially at rest as shown in the figure where all cords are frictionless and incompressible, and all pulleys are frictionless. The 8-kg Block 1 is attached to a 5-kg Block 2. The coefficients of friction between Block 1 and the horizontal surface are 0.38 (static) and 0.27 (kinetic), while between Block 2 and the surface inclined at 28° are 0.40 (static) and 0.31 (kinetic). a. Determine the angle 0 at which Block 1 is being pulled to just get it moving if force P is 71.2 N. b. If the blocks are pulled with a force of 100 N at the same angle, how fast are the blocks moving after 3 seconds? c. What is the total distance travelled?

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

4.) A force P pulls a series of blocks initially at rest as shown in
the figure where all cords are frictionless and incompressible, and
all pulleys are frictionless. The 8-kg Block 1 is attached to a 5-kg
Block 2. The coefficients of friction between Block 1 and the
horizontal surface are 0.38 (static) and 0.27 (kinetic), while
between Block 2 and the surface inclined at 28° are 0.40 (static)
and 0.31 (kinetic).
a. Determine the angle 0 at which Block 1 is being pulled to just get it moving if force P is
71.2 N.
b. If the blocks are pulled with a force of 100 N at the same angle, how fast are the blocks
moving after 3 seconds?
c. What is the total distance travelled?

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