*14-92. The roller coaster car has a speed of 15 ft/s when itis at the crest of a vertical parabolic track. Determine thecar's velocity and the normal force it exerts on the trackwhen it reaches point B. Neglect friction and the mass of thewheels. The total weight of the car and the passengersis 350 lb.VA = 15 ft/s200200 ft-200 ft

Given Data: The distance of point B from the origin is, xB=200 ft. The distance of point A from the…

Answered: *14-92. The roller coaster car has a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The 3-kg collar has a velocity of 8 m/s to the right when it is at A. It then travels down along the smooth guide shown. The spring has an unstretched length of 100 mm and B is located just before the end of the curved portion of the rod. Determine the speed of the collar when it reaches point B. - 200 mm - www 200 mm k = 50 N/m
15-145. The 10-Mg helicopter carrics a bucket containing 500 kg of water, which is used to fight fires. If it hovers over the land in a fixed position and then releases 50 kg/s of water at 10 m/s, measured relative to the helicopter, determine the initial upward acceleration the helicopter experiences as the water is being released.
The 5 lb weigh shone has a velocity of 10 ft/s when it is 3 ft above the spring platform Cables hold the spring at a length of 1 ft.. Ignore the weight of the cables and the platform. The uncompressed length of the spring is 1.75 ft. Determine the maximum additional compression of the spring. 5 lb 10 ft/s 3 ft x, = 0.75 ft. k = 400 lb/ft
The 11-lb block has a velocity of 3.83 ft/s when the force of F = (257.6t2) lb·ft/sec2 is applied. Determine the acceleration of the block when t = 2.08 s. The coefficient of kinetic friction at the surface is μk = 0.21. Answer is in ft/sec2.
The roller coaster car has a mass of 700 kg, including its passenger. If it starts from the top of the hill A with a speed v A = 3 m/s, determine the minimum height h of the hill crest so that the car travels around the inside loops without leaving the track. Neglect friction, the mass of the wheels, and the size of the car. What is the normal reaction on the car when the car is at B1. find the Max g-force on passenger, bank angle2. the force required to slow down the motion and the time the force is applied must be determined to bring the coaster to rest.3. The maximum G-load experienced by a person should be no more than 5 g
14-61. If the jet on the dragster supplies a constant thrust of T = 20 kN, determine the power generated by the jet as a function of time. Neglect drag and rolling resistance, and the loss of fuel. The dragster has a mass of 1 Mg and starts from rest. т
14-38. If the 60-kg skier passes point A with a speed of 5 m/s, determine his speed when he reaches point B. Also find the normal force exerted on him by the slope at this point. Neglect friction. y = (0.025x + 5) m 15 m
F13–11. If the 10-kg ball has a velocity of 3 m/s when it is at the position A, along the vertical path, determine the tension in the cord and the increase in the speed of the ball at this position. 2 m e = 45° A3 m/s
The collar has a mass of 28-kg and slides along the smooth rod. Two springs are attached to it and the ends of the rod as shown. S kA kB: 12 0.25 m Each spring has an uncompressed length of I1=2-m and l2=3-m and stiffnesses k1=51-N/m and k2=176-N/m respectively. Determine the velocity that must be subjected to the collar to generate a compression of 0.7 m
Determine the constant force “f” w/c must be applied to the cord in order to cause the 39lb block to have a speed of 22 ft/a when it has been displaced 0.5 ft upward starting from the rest.
The jet-powered aircraft has a mass of 25 tons and a center of mass at G. If a tow cable is attached to the top of the nose wheel and exerts a force of T = 348 N as shown, determine The acceleration of the plane, in m/s2. Neglect the lift of the wings and the mass of the wheels. 30° T 0.4 m JA + 0.8 m -6 m B& 3 m
The 15-kg block is subjected to the force shown. Determine its velocity at s= 4m if v= 6 m/s at s=0. Motion occurs to the right. F= (5.1 s)N

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