PEARSON ETEXT ENGINEERING MECH & STATS
PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Chapter 9, Problem 23P
To determine

The centroid x¯ of the parabolic shaded area.

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The gears shown in the figure have a diametral pitch of 2 teeth per inch and a 20° pressure angle. The pinion rotates at 1800 rev/min clockwise and transmits 200 hp through the idler pair to gear 5 on shaft c. What forces do gears 3 and 4 transmit to the idler shaft? TS I y 18T 32T This a 12 x 18T C 48T 5
Question 1. Draw 3 teeth for the following pinion and gear respectively. The teeth should be drawn near the pressure line so that the teeth from the pinion should mesh those of the gear. Drawing scale (1:1). Either a precise hand drawing or CAD drawing is acceptable. Draw all the trajectories of the involute lines and the circles. Specification: 18tooth pinion and 30tooth gear. Diameter pitch=P=6 teeth /inch. Pressure angle:20°, 1/P for addendum (a) and 1.25/P for dedendum (b). For fillet, c=b-a.
5. The figure shows a gear train. There is no friction at the bearings except for the gear tooth forces. The material of the milled gears is steel having a Brinell hardness of 170. The input shaft speed (n2) is 800 rpm. The face width and the contact angle for all gears are 1 in and 20° respectively. In this gear set, the endurance limit (Se) is 15 kpsi and nd (design factor) is 2. (a) Find the revolution speed of gear 5. (b) Determine whether each gear satisfies the design factor of 2.0 for bending fatigue. (c) Determine whether each gear satisfies the design factor of 2.0 for surface fatigue (contact stress). (d) According to the computation results of the questions (b) and (c), explain the possible failure mechanisms for each gear. N4=28 800rpm N₁=43 N5=34 N₂=14 P(diameteral pitch)=8 for all gears Coupled to 2.5hp motor

Chapter 9 Solutions

PEARSON ETEXT ENGINEERING MECH & STATS

Ch. 9 - Locate the centroid x of the area. Probs. 9-11/12Ch. 9 - Locate the centroid of the area. Probs. 9-11/12Ch. 9 - Locate the centroid x of the area. Probs. 9-13/14Ch. 9 - Locate the centroid of the area. Probs. 9-13/14Ch. 9 - Prob. 15PCh. 9 - Prob. 16PCh. 9 - Locate the centroid x of the shaded area. Probs....Ch. 9 - Locate the centroid of the shaded area. Probs....Ch. 9 - Prob. 23PCh. 9 - Locate the centroid of the shaded area. Probs....Ch. 9 - Prob. 25PCh. 9 - Locate the centroid x of the shaded area. Probs....Ch. 9 - Locate the centroid of the shaded area. Probs....Ch. 9 - Prob. 28PCh. 9 - Prob. 29PCh. 9 - Locate the centroid x of the shaded area. Probs....Ch. 9 - Prob. 31PCh. 9 - Prob. 32PCh. 9 - Prob. 33PCh. 9 - Prob. 35PCh. 9 - Prob. 36PCh. 9 - Prob. 40PCh. 9 - Prob. 50PCh. 9 - Locate the centroid (x,y,z) of the wire bent in...Ch. 9 - Prob. 8FPCh. 9 - Prob. 9FPCh. 9 - Prob. 10FPCh. 9 - Prob. 11FPCh. 9 - Prob. 51PCh. 9 - Prob. 52PCh. 9 - Prob. 54PCh. 9 - Prob. 56PCh. 9 - Prob. 60PCh. 9 - Locate the centroid (x,y) of the shaded area....Ch. 9 - Locate the centroid of the cross-sectional area...Ch. 9 - Prob. 72PCh. 9 - The sheet metal part has the dimensions shown....Ch. 9 - Prob. 77PCh. 9 - Prob. 79PCh. 9 - Prob. 80PCh. 9 - Prob. 81PCh. 9 - Prob. 82PCh. 9 - Prob. 83PCh. 9 - Prob. 87PCh. 9 - Prob. 89PCh. 9 - Prob. 13FPCh. 9 - Prob. 14FPCh. 9 - Prob. 15FPCh. 9 - Prob. 16FPCh. 9 - Prob. 91PCh. 9 - Prob. 92PCh. 9 - Prob. 95PCh. 9 - Prob. 96PCh. 9 - Determine the volume of concrete needed to...Ch. 9 - Determine the surface area of the curb. Do not...Ch. 9 - Prob. 103PCh. 9 - Prob. 105PCh. 9 - Prob. 107PCh. 9 - Prob. 113PCh. 9 - Determine the magnitude of the hydrostatic force...Ch. 9 - Determine the magnitude of the hydrostatic force...Ch. 9 - Prob. 19FPCh. 9 - Prob. 20FPCh. 9 - Prob. 21FPCh. 9 - The load over the plate varies linearly along the...Ch. 9 - Prob. 118PCh. 9 - Prob. 119PCh. 9 - When the tide water A subsides, the tide gate...Ch. 9 - The tank is filled with water to a depth of d = 4...Ch. 9 - Prob. 127PCh. 9 - Prob. 128PCh. 9 - Prob. 1RPCh. 9 - Prob. 2RPCh. 9 - Prob. 3RPCh. 9 - Prob. 4RPCh. 9 - Prob. 5RPCh. 9 - Prob. 6RPCh. 9 - Prob. 7RPCh. 9 - Prob. 8RPCh. 9 - The gate AB is 8 m wide. Determine the horizontal...Ch. 9 - Prob. 10RP
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