EBK ENGINEERING MECHANICS
15th Edition
ISBN: 9780137569830
Author: HIBBELER
Publisher: VST
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Chapter 14, Problem 6P
When the driver applies the brakes of a light truck traveling 40 km/h, it skids 3m before stopping. How far will the truck skid if it is traveling 80 km/h when the brakes are applied?
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When a driver applies the brakes of a light truck traveling 40 km/hr, it skids 3 mbefore stopping. How far will the truck skid if it is traveling 80 km/hr when the brakes are applied?
3. When the driver applies the brakes of a light truck traveling 20 km/h it skids 6
m before stopping. How far will the truck skid if it is traveling 100 km/h when the
brakes are applied?
2. A car is to be driven up a 7° incline road. Determine the automobiles braking distance from 30 m/s if the braking
distance at 25 m/s speed is 45m when applied on a horizontal plane. Determine the braking distance going down a 5%
incline. Assume the braking force is independent of the slope.
Chapter 14 Solutions
EBK ENGINEERING MECHANICS
Ch. 14 - Prob. 1FPCh. 14 - If the motor exerts a constant force of 300 N on...Ch. 14 - If the motor exerts a force of F = (600 + 2s2) N...Ch. 14 - The 1.8-Mg dragster is traveling at 125 m/s when...Ch. 14 - When s = 0.5 m, the spring is unstretched and the...Ch. 14 - The 5-lb collar is pulled by a cord that passes...Ch. 14 - Prob. 2PCh. 14 - The 100-kg crate is subjected to the forces shown....Ch. 14 - Determine the required height h of the roller...Ch. 14 - When the driver applies the brakes of a light...
Ch. 14 - Prob. 7PCh. 14 - The force F, acting in a constant direction on the...Ch. 14 - The 2-lb brick slides down a smooth roof, such...Ch. 14 - The two blocks A and B have weights WA = 60 lb and...Ch. 14 - A small box of mass m is given a speed of v=14gr...Ch. 14 - Prob. 18PCh. 14 - If the cord is subjected to a constant force of F=...Ch. 14 - The crash cushion for a highway barrier consists...Ch. 14 - The 25-lb block has an initial speed of v0 = 10...Ch. 14 - At a given instant the 10-lb block A is moving...Ch. 14 - Prob. 25PCh. 14 - The catapulting mechanism is used to propel the...Ch. 14 - Prob. 27PCh. 14 - Prob. 31PCh. 14 - When the 150-lb skier is at point A he has a speed...Ch. 14 - Prob. 39PCh. 14 - Prob. 40PCh. 14 - If the contact surface between the 20-kg block and...Ch. 14 - Prob. 8FPCh. 14 - Prob. 9FPCh. 14 - Prob. 10FPCh. 14 - Prob. 11FPCh. 14 - Prob. 12FPCh. 14 - The jeep has a weight of 2500 lb and an engine...Ch. 14 - Determine the power Input for a motor necessary to...Ch. 14 - An automobile having a mass of 2 Mg travels up a 7...Ch. 14 - Prob. 45PCh. 14 - To dramatize the loss of energy in an automobile,...Ch. 14 - Escalator steps move with a constant speed of 0.6...Ch. 14 - Prob. 48PCh. 14 - The 1000-lb elevator is hoisted by the pulley...Ch. 14 - The sports car has a mass of 2.3 Mg, and while it...Ch. 14 - Prob. 54PCh. 14 - Prob. 55PCh. 14 - The 50-lb block rests on the rough surface for...Ch. 14 - The 2-kg pendulum bob is released from rest when...Ch. 14 - Prob. 14FPCh. 14 - Prob. 15FPCh. 14 - Prob. 16FPCh. 14 - The 75-lb block is released from rest 5 ft above...Ch. 14 - Prob. 18FPCh. 14 - The girl has a mass of 40 kg and center of mass at...Ch. 14 - The 30-lb block A is placed on top of two nested...Ch. 14 - The 5-kg collar has a velocity of 5 m/s to the...Ch. 14 - The 5-kg collar has a velocity of 5 m/s to the...Ch. 14 - Prob. 71PCh. 14 - The roller coaster car has a mass of 700 kg,...Ch. 14 - The roller coaster car has a mass of 700 kg,...Ch. 14 - Prob. 76PCh. 14 - The roller coaster car having a mass m is released...Ch. 14 - The spring has a stiffness k = 200 N/m and an...Ch. 14 - Prob. 79PCh. 14 - Prob. 80PCh. 14 - When s = 0, the spring on the firing mechanism is...Ch. 14 - If the mass of the earth is Me, show that the...Ch. 14 - A rocket of mass m is fired vertically from the...Ch. 14 - The 4-kg smooth collar has a speed of 3 m/s when...Ch. 14 - Prob. 85PCh. 14 - Prob. 87PCh. 14 - Prob. 90PCh. 14 - The roller coaster car has a speed of 15 ft/s when...Ch. 14 - Prob. 1RPCh. 14 - The small 2-lb collar starting from rest at A...Ch. 14 - Prob. 3RPCh. 14 - Prob. 4RPCh. 14 - Prob. 5RPCh. 14 - Prob. 6RPCh. 14 - Prob. 7RPCh. 14 - Prob. 8RP
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- Niloarrow_forwardI need correct and only handwrittenarrow_forwardA car is traveling at the speed Vo on straight, level road. After the brakes are applied at t = 0, the motion can - t² + 15t where x is the distance traveled in meters and t is the time in seconds. 80 A. What is the speed (Vo) of the car? be approximated by x = B. What is the distance required for the car to stop? C. What is the maximum acceleration during braking?arrow_forward
- 1. An SUV hauling a trailer is travelling at 25 m/s when the driver hits the brakes. The 1.4 MT trailer is equipped with an in-cab controlled electronic drum brake with a braking force of 4500 N. If the brake force applied to the 1.6 MT SUV is 5500 N, what is the braking distance of both the SUV and the trailer? Determine the force exerted by the trailer to the SUV.arrow_forwardIf the body starts from rest at A and slides 200 ft down the 30° incline, how far will it then move along the other incline? What will be the velocity when it returns to B? Coeff fr= 0.20.arrow_forwardHow much time will it take for weight B to travel upward 242 mm? if point P has a constant acceleration of 650 mm/s^2 and Point P starts from rest.arrow_forward
- 2. A tractor is lifting a package with a simple pulley as shown. vp 4 m 3 m VT = 0.5 m/s aT = 0.4 m/s² a. What is the velocity of the package at the time shown? b. What is the acceleration of the package at the time shown?arrow_forward1. An SUV hauling a trailer is travelling at 25 m/s when the driver hits the brakes. The 1.4 MT trailer is equipped with an in-cab controlled electronic drum.l brake with a braking force of 4500 N. If the brake force applied to the 1.6 MT SUV is 5500 N, what is the braking distance of both the SUV and the trailer? Determine the force exerted by the trailer to the SUVarrow_forwardR ft Rft P lb The block of weight 131 lb is pushed with a force of P = 46 lb on top of two cylindrical rollers with a weight of 32 lb and a radius of R = 1.91 ft. Determine the block's speed after it has been moved 1.48 ft to the left. The block is originally at rest. No slipping occurs. Calculate your answer to two decimal places. Report your answer in ft/s.arrow_forward
- -1 attachment - 4. An SUV travels a 1.30 km levelled road from Bonifacio Rotunda to Citylights Hotel ip a mininum time of 45.60 sec. The SUV starts from rest at the Rotunda, travels at a constant speed for some time and will stop at Citylights Hotel. Given that the car accelerates and decelerates at 2.53 m/s, determine: a. The maximum speed (in kph) b. The time (in seconds) it travels at this speed • Assume that the time for accelerating and decelerating are equal.arrow_forwardA sport car is traveling along a 40° banked road having a radius of curvature of 146 ft. The driver wants to increase his speed to 161 ft/s and wants to know which tires he must select. Determine (with 2 digits after the decimal point) the minimal required static friction between the tires and the roadarrow_forwardthe block has is about to be set in motion up in the incline. its impending motion is due to the horizontal force whose magnitude is reflected on the diagram. what is the coefficient of static friction between the surfaces of the block and incline? Note that R is the resultant of all the forces acting on the surface of contact between incline and block.arrow_forward
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