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ZZ1001D Engineering Mechanics: Work-Energy Relations For A System of Particles

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26 views9 pages

ZZ1001D Engineering Mechanics: Work-Energy Relations For A System of Particles

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rock tej
Copyright
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ZZ1001D Engineering Mechanics

Lecture 36
Work-energy relations for a system of
particles
Work-Energy Relations for a System of Particles
Work-Energy Relations for a System of Particles
Example 178:
Work-Energy Relations for a System of Particles
Example 179: Blocks A and B shown in Fig. have a mass of 10 kg and 100 kg,
respectively. Determine the distance B travels when it is released from rest to the
point where its speed becomes 2 m/s.
Work-Energy Relations for a System of Particles
Example 180:
Work-Energy Relations for a System of Particles
Example 181:
Work-Energy Relations for a System of Particles
Example 182: Three blocks are connected by an inextensible flexible cable. The
blocks are released from a rest configuration with the cable taut. If A can only fall
a distance h equal to 2 ft, what is the velocity of bodies C and B after each has
moved a distance of 3 ft? Each body weighs 100 lb. The coefficient of dynamic
friction for body C is 0.3 and for body B is 0.2.
Work-Energy Relations for a System of Particles
Example 183:
Problems on conservation of mechanical energy
Example 157: Two blocks A and B are connected by an inextensible chord
running over a frictionless and massless pulley E. The system starts from rest.
What is the velocity of the system after it has moved 3 ft? The coefficient of
dynamic friction μd equals 0.22 for bodies A and B.

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