Q: A soccer goal is subjected to gravity loads (in the 2z
A soccer goal is subjected to gravity loads (in the 2z direction, w = 73 N/m for DG, BG, and BC; w = 29 N/m for all other members; see figure) and a force F = 200 N applied eccentrically at the mid-he...
See AnswerQ: An elliptical exerciser machine (see figure part a) is composed
An elliptical exerciser machine (see figure part a) is composed of front and back rails. A simplified plane-frame model of the back rail is shown in figure part b. Analyze the plane-frame model to fin...
See AnswerQ: A mountain bike is moving along a flat path at constant velocity
A mountain bike is moving along a flat path at constant velocity. At some instant, the rider (weight = 670 N) applies pedal and hand forces, as shown in the figure part a. (a) Find reaction forces at...
See AnswerQ: A hollow circular post ABC (see figure) supports a load
A hollow circular post ABC (see figure) supports a load P1 = 1700 lb acting at the top. A second load 2 P is uniformly distributed around the cap plate at B. The diameters and thicknesses of the upper...
See AnswerQ: A steel column of hollow circular cross section is supported on a
A steel column of hollow circular cross section is supported on a circular, steel base plate and a concrete pedestal (see figure). The column has an outside diameter d = 250 mm and supports a load P =...
See AnswerQ: Imagine that a long steel wire hangs vertically from a high-
Imagine that a long steel wire hangs vertically from a high-altitude balloon. (a) What is the greatest length (feet) it can have without yielding if the steel yields at 40 ksi? (b) If the same wire ha...
See AnswerQ: A high-strength steel bar used in a large crane has
A high-strength steel bar used in a large crane has a diameter d = 2.00 in. (see figure). The steel has a modulus of elasticity E = 29 × 106 psi and Poisson’s ratio is n...
See AnswerQ: An elevated jogging track is supported at intervals by a wood beam
An elevated jogging track is supported at intervals by a wood beam AB (L = 7 .5 ft) that is pinned at A and supported by steel rod BC and a steel washer at B. Both the rod (dBC = 3 /16 in.) and the wa...
See AnswerQ: A flat bar of a width 60 mm b 5 and thickness
A flat bar of a width 60 mm b 5 and thickness 10 mm t 5 is loaded in tension by a force P (see figure). The bar is attached to a support by a pin of a diameter d that passes through a hole of the same...
See AnswerQ: Continuous cable ADB runs over a small frictionless pulley at D to
Continuous cable ADB runs over a small frictionless pulley at D to support beam OABC, which is part of an entrance canopy for a building (see figure). The canopy segment has a weight W = 1700 lb that...
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