Answered: M †10 mm 10 mm 30 mm ț10 mm 30 mm

Engineering

Mechanical Engineering

M †10 mm 10 mm 30 mm ț10 mm 30 mm

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter3: Job Planning, Benchwork, And Layout

Section3.1: Understanding Drawings

Problem 1RQ: Information such as tolerances and scale can be found in the________ of an engineering drawing.

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Question

A laminated plastic beam of square cross section is built up by gluing together three strips, each 10 mm x 30 mm in cross section (see figure). The beam has a total weight of 3.6 N and is simply supported with span length L = 360 mm.

Considering the weight of the beam (q), calculate the maximum permissible CCW moment M that may be placed at the right support.
a. The allowable shear stress in the glued joints is 0.3 MPa.
b. The allowable bending stress in the plastic is 8 MPa

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