Problem 3A man standing on a pitched roof (3 down to 12 horizontal) rolls a 50-lb tire off the roof with an initialvelocity of 7 ft/sec as it leaves the roof, after which it hits the concrete driveway 30 feet below, andbounces. The tire is inflated such that its coefficient of restitution is 0.8. Determine the speed and angleVB2 VAZof the tire as it leaves the concrete driveway measured from the horizontal.e=

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Answered: Problem 3 A man standing on a pitched…

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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NOTE: Please answer problem #2. Prob#1: Determine the time required that the elevator travels at any instant at a distance of 8 meters. The weight of the elevator is 10,000 N moving downward from rest until its velocity is 15 m / sec. (sec.) Please answer this question only: Prob#2: In Problem 1, determine the force exerted in the cable to support the elevator. (kN)
Need solution of part third for Force (F) in lb. If you are sure then only solve otherwise skip it. Don't post incorrect solution, check twise before uploading solution. Thank you ?
Problem 2 A deformable object with mass of 30-kg is traveling toward a rigid structure at 2000 km/hr as shown in the figure below. After striking the structure is leaves at a speed of 600 km/hr as shown. Determine the magnitude and direction of the average impulsive force generated in the collision if it last 500 ms. 30° 2000 km/hr 20 600km/hr
A 10.5-Mg truck is resting on the deck of a barge which displaces 251 Mg and is at rest in still water. If the truck starts and drives toward the bow at a speed relative to the barge vrel = 5.1 km/h, calculate the speed v of the barge. The resistance to the motion of the barge through the water is negligible at low speeds. t'red = 5.1 km/h 10.5 Mg 251 Mg- Answer: v = i km/h
When s = 0.6 m, the spring is unstretched and the 10 kg block has a speed of 5 m/sec down the smooth plane. Determine the distance s when the block stops. See figure (4). k = 200 N/m 5 m/s F = 100 N 30/ Fig.4
For a perfectly elastic collision, u1+v1=u2+v2, or alternatively, u2−u1=v1−v2. If object 2 is initially at rest, then u2=0. Then v1−v2=−u1. However, for a partially elastic collision the relative velocity after the collision will have a smaller magnitude than the relative velocity before the collision. We can express this mathematically as v1−v2=−ru1, where r (a number less than one) is called the coefficient of restitution. For some kinds of bodies, the coefficient r is a constant, independent of v1 and v2. Show that in this case the final kinetic energy of the motion relative to the center of mass is less than the initial kinetic energy of this motion by a factor of r2. Furthermore, derive expressions for v1 and v2 in terms of u1 and r.
The 0.56 kg ball strikes the rough ground and rebounds with the velocity v2 as shown in the following figure. Assume that the ball does not slip when it strikes the ground and neglect the size of the ball and the impulse produced by the weight of the ball. Use v1 18 m/s, v2 = 3 m/s,01 = 51° and 02 = 14°. V2 V1 01 02 Determine the magnitude of the impulse the ground experts on the ball. Insert your answer in Ns correct up to at least a third decimal place.
The system is at rest with the spring unstretched when 8 = 0. The 4 kg particle is then given a slight nudge to the right. (@) If the system comes to momentary rest at e = 36", determine the spring constant k. (b) For the value k=110 N/m, find the total energy and speed of the particle when 8 = 20°. Neglect friction. h= 0.4 m
The athlete with a mass of 85 kg moves from point A with a velocity vA. The circular orbit it slides has a radius of 4.9 meters and an angle of 60 degrees. As it is know that the reaction force affecting the athlete at the D point is 4. (Coefficient of Dmg); a) Calculate the athlete initial velocity vA and the velocity vB at point B. b) Calculate the height y, which is the highest distance that the athlete can climb after point B, and the distance between BC that he can travel horizontally.
Please use the Rigid Bodies method from vector dynamics.
Pr
01: The slider of mass m= 0.7-kg, starts from rest at position A and the undeformed (unstretched) length of spring is Lo = 210 mm. Under the action of the constant force p= 55N force in the cable, calculate the velocity v of the block as it reaches position B. B 200 mm A 200 250 mm P mm 250 mm k m 200

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