Engineering Mechanics: Statics
13th Edition
ISBN: 9780132915540
Author: Russell C. Hibbeler
Publisher: Prentice Hall
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Chapter 9.5, Problem 131RP
To determine
The surface area of a material required to make belt
( A )
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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
Engineering Mechanics: Statics
Ch. 9.1 - Determine the centroid (x,y) of the shaded area....Ch. 9.1 - Determine the centroid (x,y) of the shaded area....Ch. 9.1 - Determine the centroid of the shaded area. Prob....Ch. 9.1 - Locate the center of mass x of the straight rod if...Ch. 9.1 - Locate the centroid of the homogeneous solid...Ch. 9.1 - Locate the centroid z of the homogeneous solid...Ch. 9.1 - Locate the center of mass of the homogeneous rod...Ch. 9.1 - Prob. 2PCh. 9.1 - Prob. 3PCh. 9.1 - Prob. 4P
Ch. 9.1 - Prob. 5PCh. 9.1 - Locate the centroid of the area.Ch. 9.1 - Prob. 7PCh. 9.1 - Prob. 8PCh. 9.1 - Prob. 9PCh. 9.1 - Locate the centroid of the area. Prob. 9-17Ch. 9.1 - Locate the centroid x of the area. Probs. 9-11/12Ch. 9.1 - Locate the centroid of the area. Probs. 9-11/12Ch. 9.1 - Locate the centroid x of the area. Probs. 9-13/14Ch. 9.1 - Locate the centroid of the area. Probs. 9-13/14Ch. 9.1 - Prob. 15PCh. 9.1 - Prob. 16PCh. 9.1 - Prob. 17PCh. 9.1 - Locate the centroid x of the area. Probs. 9-18/19Ch. 9.1 - Locate the centroid of the area. Probs. 9-18/19Ch. 9.1 - Locate the centroid of the shaded area.Ch. 9.1 - Prob. 21PCh. 9.1 - Prob. 22PCh. 9.1 - Prob. 23PCh. 9.1 - Prob. 24PCh. 9.1 - Determine the location of its center of gravity....Ch. 9.1 - Prob. 26PCh. 9.1 - Prob. 27PCh. 9.1 - Prob. 28PCh. 9.1 - Prob. 29PCh. 9.1 - Prob. 30PCh. 9.1 - Prob. 31PCh. 9.1 - Locate the centroid x of the area. Probs. 9-32/33Ch. 9.1 - Locate the centroid of the area. Probs. 9-32/33Ch. 9.1 - Determine the location of its center of mass. Also...Ch. 9.1 - Prob. 35PCh. 9.1 - Prob. 36PCh. 9.1 - Prob. 37PCh. 9.1 - Prob. 38PCh. 9.1 - Locate the centroid of the paraboloid. Probs....Ch. 9.1 - The material is homogeneous. Prob. 9-39Ch. 9.1 - Prob. 41PCh. 9.1 - Determine the centroid of the solid. Prob. 9-42Ch. 9.1 - Locate the center of gravity z of the solid. Prob....Ch. 9.1 - Locate the centroid of the ellipsoid of...Ch. 9.1 - Prob. 45PCh. 9.1 - Determine its mass and the distance z to the...Ch. 9.1 - Locate the centroid of the quarter-cone. Prob....Ch. 9.1 - Locate the centroid z of the frustum of the...Ch. 9.1 - Prob. 49PCh. 9.1 - Suggestion: Use a triangular plate element...Ch. 9.2 - Locate the centroid (x,y,z) of the wire bent in...Ch. 9.2 - Locate the centroid of the beams cross-sectional...Ch. 9.2 - Locate the centroid of the beams cross-sectional...Ch. 9.2 - Locate the centroid (x,y) of the cross-sectional...Ch. 9.2 - Locate the center of mass (x,y,z) of the...Ch. 9.2 - Determine the center of mass (x,y,z) of the...Ch. 9.2 - If the mass of the gusset plates at the joints and...Ch. 9.2 - Prob. 52PCh. 9.2 - Prob. 53PCh. 9.2 - Neglect the thickness of the material and slight...Ch. 9.2 - Prob. 55PCh. 9.2 - Each plate has a constant width in the z direction...Ch. 9.2 - Prob. 57PCh. 9.2 - Neglect the size of the corner welds at A and B...Ch. 9.2 - Prob. 59PCh. 9.2 - Prob. 60PCh. 9.2 - Prob. 61PCh. 9.2 - Prob. 62PCh. 9.2 - Prob. 63PCh. 9.2 - Prob. 64PCh. 9.2 - Prob. 65PCh. 9.2 - Assume all corners are square and neglect the size...Ch. 9.2 - Prob. 67PCh. 9.2 - Prob. 68PCh. 9.2 - Prob. 69PCh. 9.2 - Prob. 70PCh. 9.2 - Neglect the size of the corner welds at A and B...Ch. 9.2 - Prob. 72PCh. 9.2 - If it is folded over as shown, determine the...Ch. 9.2 - Determine the location (x,y,z) of its centroid....Ch. 9.2 - It the cord is cut, the part will rotate about the...Ch. 9.2 - Prob. 76PCh. 9.2 - The location of the center of gravity of each...Ch. 9.2 - Prob. 78PCh. 9.2 - Prob. 79PCh. 9.2 - Prob. 80PCh. 9.2 - Prob. 81PCh. 9.2 - Determine the distance h to which a...Ch. 9.2 - Determine the distance z to the centroid of the...Ch. 9.2 - Prob. 84PCh. 9.2 - Prob. 85PCh. 9.2 - Prob. 86PCh. 9.2 - Determine the distance x to its center of gravity...Ch. 9.2 - Prob. 88PCh. 9.2 - The cylinder and the cone are made from materials...Ch. 9.3 - Determine the surface area and volume of the solid...Ch. 9.3 - Prob. 14FPCh. 9.3 - Determine the surface area and volume of the solid...Ch. 9.3 - Determine the surface area and volume of the solid...Ch. 9.3 - Prob. 90PCh. 9.3 - Determine the volume of the storage tank. Probs....Ch. 9.3 - Prob. 92PCh. 9.3 - Prob. 93PCh. 9.3 - Prob. 94PCh. 9.3 - Prob. 95PCh. 9.3 - Prob. 96PCh. 9.3 - Prob. 97PCh. 9.3 - Prob. 98PCh. 9.3 - Prob. 99PCh. 9.3 - Prob. 100PCh. 9.3 - Determine the surface area and the volume of the...Ch. 9.3 - Prob. 102PCh. 9.3 - Prob. 103PCh. 9.3 - Each gallon of paint can cover 250 ft2. Probs....Ch. 9.3 - Prob. 105PCh. 9.3 - Prob. 106PCh. 9.3 - Prob. 107PCh. 9.3 - Prob. 108PCh. 9.3 - Prob. 109PCh. 9.3 - Prob. 110PCh. 9.3 - Prob. 111PCh. 9.3 - Prob. 112PCh. 9.3 - Prob. 113PCh. 9.3 - Prob. 114PCh. 9.5 - Water has a density of = 1 Mg/m3. Prob. F9-17Ch. 9.5 - The specific weight of water is = 62.4 lb/ft3.Ch. 9.5 - Water has a density of = 1 Mg/m3. Prob. F9-19Ch. 9.5 - Water has a density of = 1 Mg/m3. Prob. F9-20Ch. 9.5 - The specific weight of water is = 62.4 lb/ft3....Ch. 9.5 - Prob. 115PCh. 9.5 - Prob. 116PCh. 9.5 - The load over the plate varies linearly along the...Ch. 9.5 - The load is defined by the expression p = p0 sin...Ch. 9.5 - Prob. 119PCh. 9.5 - Determine the resultant force the water exerts on...Ch. 9.5 - For the condition of high tide shown, determine...Ch. 9.5 - Prob. 122PCh. 9.5 - Prob. 123PCh. 9.5 - Determine the magnitude of the resultant...Ch. 9.5 - Prob. 125PCh. 9.5 - Prob. 126PCh. 9.5 - The tank is filled with a liquid that has a...Ch. 9.5 - Prob. 128PCh. 9.5 - Prob. 129PCh. 9.5 - Prob. 130PCh. 9.5 - Prob. 131RPCh. 9.5 - Determine the volume of material required to make...Ch. 9.5 - Prob. 133RPCh. 9.5 - Prob. 134RPCh. 9.5 - Determine the magnitude of the resultant...Ch. 9.5 - Prob. 136RPCh. 9.5 - Prob. 137RPCh. 9.5 - Locate the centroid of the rod. Prob. R9-4Ch. 9.5 - Determine the horizontal and vertical components...Ch. 9.5 - Prob. 140RP
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