Applied Physics (11th Edition)
Applied Physics (11th Edition)
11th Edition
ISBN: 9780134159386
Author: Dale Ewen, Neill Schurter, Erik Gundersen
Publisher: PEARSON
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Chapter 9.6, Problem 34P

Find the number of teeth for gear D in each rear train.

Chapter 9.6, Problem 34P, Find the number of teeth for gear D in each rear train. 34.

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It is required to design a pair of spur gears with 20° full-depth involute teeth. The input [ shaft rotates at 720 rpm and received 5 kW power through a flexible coupling. The speed of output shaft should be 144 rpm. The pinion as well as the gear are made up of Fe410. The service factor for the application is 1.25 the gears are machined to meet the specifications of Grade 6. Assume number of teeth for the pinion as 18. (i) For preliminary calculations, assume pitch line velocity as 5 m/s and the factor of safety as 2. Estimate the module and select the first preference value of the module. (ii) Using the value of module, calculate the pitch circle diameter of the pinion and gear (iii) Determine the static load and dynamic load by Buckingham's equation. Also and the face width. calculate the beam strength and the correct value of factor of safety based on beam strength. (iv) Using factor of safety of 2 for wear strength, specify the surface hardness for gears.

Chapter 9 Solutions

Applied Physics (11th Edition)

Ch. 9.1 - Convert 675 rad/s to rpm.Ch. 9.1 - Convert 285 rpm to rad/s.Ch. 9.1 - Convert 136 rpm to rad/s.Ch. 9.1 - Convert 88.4 rad/s to rpm.Ch. 9.1 - A motor turns at a rate of 11.0 rev/s. Find its...Ch. 9.1 - A rotor turns at a rate 180 rpm. Find its angular...Ch. 9.1 - A rotating wheel completes one revolution in 0.150...Ch. 9.1 - A rotor completes 50.0 revolutions in 3.25 s. Find...Ch. 9.1 - A flywheel rotates at 1050 rpm. (a) How long (in...Ch. 9.1 - A wheel rotates at 36.0 rad/s. (a) How long (in s)...Ch. 9.1 - A shaft of radius 8.50 cm rotates 7.00 rad/s. Find...Ch. 9.1 - Awheel of radius 0.240 m turns at 4.00 rev/s. Find...Ch. 9.1 - A pendulum of length 1.50 m swings through an arc...Ch. 9.1 - An airplane circles an airport twice while 5.00 mi...Ch. 9.1 - A wheel of radius 27.0 cm has an angular speed of...Ch. 9.1 - A belt is placed around a pulley that is 30.0 cm...Ch. 9.1 - A flywheel of radius 25.0 cm is rotating at 655...Ch. 9.1 - An airplane propeller with blades 2.00 m long is...Ch. 9.1 - An automobile is traveling at 60.0 km/h. Its tires...Ch. 9.1 - Ftnd the angular speed (in rad/s) of the following...Ch. 9.1 - A bicycle wheel of diameter 30 0 in rotates twice...Ch. 9.1 - A point on the rim of a flywheel with radius 1.50...Ch. 9.1 - The earth rotates on its axis at an angular speed...Ch. 9.1 - A truck tire rotates at an initial angular speed...Ch. 9.1 - Find the angular acceleration of a radiator fan...Ch. 9.1 - A wheel of radius 20.0 cm starts from rest and...Ch. 9.1 - A circular disk 30.0 cm in diameter is rotating at...Ch. 9.1 - A rotating flywheel of diameter 40.0 cm uniformly...Ch. 9.3 - Given: m = 64.0 kg = 34.0 m/s r = 17.0 m F =...Ch. 9.3 - Given: m = 11.3 slugs = 3.00 ft/s r = 3.24 ft F =...Ch. 9.3 - Given: F = 2500 lb = 47.6 ft/s r = 72.0 ft m =...Ch. 9.3 - Given: F = 587 N = 0.780 m/s m = 67.0 kg r =...Ch. 9.3 - Given: F = 602 N m = 63.0 kg r = 3.20 m =...Ch. 9.3 - Given: m = 37.5 kg = 17.0 m/s r = 3.75 m F =...Ch. 9.3 - Given: F = 75.0 N = 1.20 m/s m = 100 kg r =...Ch. 9.3 - Given: F = 80.0 N m = 43.0 kg r = 17.5 m =...Ch. 9.3 - An automobile of mass 117 slugs follows a curve of...Ch. 9.3 - Find the centripetal force exerted on a 7.12-kg...Ch. 9.3 - The centripetal force on a car of mass 800kg...Ch. 9.3 - The centripetal force on a runner is 17.0 lb. If...Ch. 9.3 - An automobile with mass 1650 kg is driven around a...Ch. 9.3 - A cycle of mass 510 kg rounds a curve of radius 40...Ch. 9.3 - What is the centripetal force exerted on a rock...Ch. 9.3 - What is the centripetal force on a 1500-kg vehicle...Ch. 9.3 - What is the centripetal force on a 750-kg vehicle...Ch. 9.3 - A truck with mass 215 slugs rounds a curve of...Ch. 9.3 - A 225-kg dirt bike is rounding a curve with linear...Ch. 9.3 - A 55,000-kg truck rounds a curve at 62.0 km/h. If...Ch. 9.3 - The radius of a curve is 27.5 m. What is the...Ch. 9.4 - Given: = 125 lb ft = 555 rpm P = ________ ft...Ch. 9.4 - Given: = 39.4 N m = 6.70/s P = _________ WCh. 9.4 - Given: = 372 lb ft = 264 rpm P = __________ hpCh. 9.4 - Given: = 650 N m = 45.0/s P = _________ kWCh. 9.4 - Giver: P = 8950W = 4.80/s = _____________Ch. 9.4 - Given: P = 650W = 540 N m = ________Ch. 9.4 - What horsepower is developed by an engine with...Ch. 9.4 - What torque must be applied to develop 175 ft fb/s...Ch. 9.4 - Find the angular velocity of a motor developing...Ch. 9.4 - A high-speed industrial drill develops 0.500 hp at...Ch. 9.4 - An engine has torque of 550 N m at 8.3 rad/s. What...Ch. 9.4 - Find the angular velocity of a motor developing...Ch. 9.4 - What power (in hp) is developed by an engine with...Ch. 9.4 - Find the angular velocity of a motor developing...Ch. 9.4 - A drill develops 0.500 kW of power at 1800 rpm....Ch. 9.4 - What power is developed by an engine with torque...Ch. 9.4 - A tangential force of 150 N is applied to a...Ch. 9.4 - Find the power developed by an engine with a...Ch. 9.4 - Find the power developed by an engine with a...Ch. 9.4 - Find the power developed by an engine with torque...Ch. 9.4 - Find the angular velocity of a motor daveloping...Ch. 9.4 - A motor develops 0.75 kW of power at 2000...Ch. 9.4 - What power is developed when a tangential force of...Ch. 9.4 - What power is developed when a tangential force of...Ch. 9.4 - An engine develops 1.50 kW of power at 10,000...Ch. 9.4 - A mechanic tightens engine bolts using 45.5 N m of...Ch. 9.4 - An ag mechanic tightens implement bolts using 52.5...Ch. 9.6 - Prob. 1PCh. 9.6 - Prob. 2PCh. 9.6 - Prob. 3PCh. 9.6 - Prob. 4PCh. 9.6 - Prob. 5PCh. 9.6 - Prob. 6PCh. 9.6 - A driver gear has 36 teeth and makes 85.0 rpm....Ch. 9.6 - A motor turning at 1250 rpm is fitted with a gear...Ch. 9.6 - A gear running at 250 rpm meshes with another...Ch. 9.6 - A driver gear with 40 teeth makes 154 rpm. How...Ch. 9.6 - Two gears have a speed ratio of 4.2 to 1. If the...Ch. 9.6 - What size gear should be meshed with a 15-tooth...Ch. 9.6 - A driver gear has 72 teeth and makes 162 rpm. Find...Ch. 9.6 - A driver gear with 60 teeth makes 1600 rpm. How...Ch. 9.6 - What size gear should be meshed with a 20-tooth...Ch. 9.6 - A motor turning at 1500 rpm is fitted with a gear...Ch. 9.6 - The larger of two gears in a clock has 36 teeth...Ch. 9.6 - How many revolutions does an 88-tooth gear make in...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - If gear A turns in a clockwise motion, determine...Ch. 9.6 - Find the speed in rpm of gear D in each gear...Ch. 9.6 - Find the speed in rpm of gear D in each gear...Ch. 9.6 - Find the speed in rpm of gear D in each gear...Ch. 9.6 - Find the speed in rpm of gear D in each gear...Ch. 9.6 - Find the speed in rpm of gear D in each gear...Ch. 9.6 - Find the number of teeth for gear D in each rear...Ch. 9.6 - Find the number of teeth for gear D in each gear...Ch. 9.6 - Find the number of teeth for gear D in each gear...Ch. 9.6 - Find the number of teeth for gear D in each gear...Ch. 9.6 - Find the number of teeth for gear D in each gear...Ch. 9.6 - Find the direction of rotation of gear B if gear A...Ch. 9.6 - Find the effect of doubling the number of teeth on...Ch. 9.7 - Find each missing quantity using DN = dn. 1.Ch. 9.7 - Find each missing quantity using DN = dn. 2.Ch. 9.7 - Find Bach missing quantity using DN = dn. 3.Ch. 9.7 - Find each missing quantity using DN = dn. 4.Ch. 9.7 - Find each missing quantity using DN = dn. 5.Ch. 9.7 - A driver pulley of diameter 6.50 in. revolves at...Ch. 9.7 - A driver pulley of diameter 25.0 cm revolves at...Ch. 9.7 - One pulley of diameter 36.0 cm revolves at 600...Ch. 9.7 - One pulley rotates at 450 rpm. The diameter of the...Ch. 9.7 - A pulley with a radius of 10.0 cm rotates at 120...Ch. 9.7 - Determine the direction of pulley B in each pulley...Ch. 9.7 - Determine the direction of pulley B in each pulley...Ch. 9.7 - Determine the direction of pulley B in each pulley...Ch. 9.7 - Determine the direction of pulley B in each pulley...Ch. 9.7 - Determine the direction of pulley B in each pulley...Ch. 9.7 - What size pulley should be placed on a...Ch. 9 - Angular velocity is measured in a....Ch. 9 - Power in the rotational system a. is found in the...Ch. 9 - A gear train has 13 directly connected gears. The...Ch. 9 - Distinguish between curvilinear motion and...Ch. 9 - Name the two types of measurement of rotation.Ch. 9 - In your own words, define radian.Ch. 9 - What is angular displacement? In what units is it...Ch. 9 - How is linear velocity of a point on a circle...Ch. 9 - How do equations for uniformly accelerated...Ch. 9 - A girl jumping from a high platform into a pool...Ch. 9 - Is the tangent to a circle always perpendicular to...Ch. 9 - Will inertia tend to keep a moving body following...Ch. 9 - Explain the relationship between the number of...Ch. 9 - How does the presence of an idler gear affect the...Ch. 9 - When the number of directly connected gears in a...Ch. 9 - How do pulley combination equations compare to...Ch. 9 - If a large pulley and a small pulley are connected...Ch. 9 - How do we know the belt connecting two pulleys...Ch. 9 - Convert 13 revolutions to (a) radians and...Ch. 9 - A bicycle wheel turns 25 rad during 45 s. Find the...Ch. 9 - A lawn tractor tire turns at 65.0 rpm and has a...Ch. 9 - A model plane pulls into a tight curve of a radius...Ch. 9 - A 0.950-kg mass is spun in a circle on a string of...Ch. 9 - A girl riding her bike creates a torque of 1.20 lb...Ch. 9 - A motor generates 300 W of power. The torque...Ch. 9 - Two rollers are side by side, with the large one...Ch. 9 - A clock is driven by a series of gears. The first...Ch. 9 - Two gears have 13 and 26 teeth, respectively. The...Ch. 9 - A gear train has 17 directly connected gears. Do...Ch. 9 - A pulley of diameter 14.0 cm is driven by an...Ch. 9 - A pulley of diameter 5.00 cm is driven at 100 rpm....Ch. 9 - If gear C turns counterclockwise, in what...Ch. 9 - Find the speed in rpm of gear D.Ch. 9 - Find the number of teeth in gear D.Ch. 9 - As part of their training, NASA astronauts are...Ch. 9 - Waterwheels are used to convert kinetic energy...Ch. 9 - A hairpin turn on a concrete racetrack has a...Ch. 9 - (a) How much power does a motorcycle need to...
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