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Engineering Analysis Lecture: Final Exam Review on Machines, Friction, and Forces

In this lecture, we will review key concepts for the final exam, including the dynamics of machines, the role of friction in mechanical systems, and handling distributed loads. We will focus on determining forces acting on structural members as illustrated in specific examples. The session includes exercises from the assignment set and real-world applications involving centroids and static friction. Participants will gain insights to solve problems effectively and prepare for the exam with a comprehensive understanding of engineering principles.

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Engineering Analysis Lecture: Final Exam Review on Machines, Friction, and Forces

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  1. ENGR-1100 Introduction to Engineering Analysis Lecture 28

  2. Today Lecture outline • Final exam review • Machines • Friction • Distributed loads • Composite area

  3. D=320 lb 600 E=716 lb 750 F=540 lb 50.30 Class Assignment: Exercise set 7-105 Determine all forces on member DEF of the frame shown in fig. P7-105. 140 lb/ft C B A 2 ft 75° 60° E D F 2 ft 3 ft

  4. Example 5-46 Locate the centroid of the shaded area shown in each of the following figures.

  5. A B Example 9-128 Blocks A and B of Fig. P9-128 have 20 - and 50 - kg masses, respectively. The static coefficients of friction between blocks A and B and between block B and the horizontal surface are 0.25. The static coefficient of friction between the rope and the fixed pegs is 0.20. Determine the force P required to initiate motion of block B. Pmin=414 N

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