15-131. Sand is discharged from the silo at A at a rate of50 kg/s with a vertical velocity of 10 m/s onto the conveyorbelt, which is moving with a constant velocity of 1.5 m/s. Ifthe conveyor system and the sand on it have a total mass of750 kg and center of mass at point G, determine thehorizontal and vertical components of reaction at the pinsupport B and roller support A. Neglect the thickness of theconveyor.B.1.5 m/s3010 m/s4 m-4 m-

Draw the F.B.D of the conveyor belt assuming it as the control volume C.V.

Answered: 15-131. Sand is discharged from the…

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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4 m M = (301²) N.m F = 15t N If the rod of negligible mass is subjected to a couple moment of M=24t² N;M where t is the time in seconds, and the engine of the car supplies a braking force F= 15t N to the wheels, determine the speed of the car at t= 10s. The car at t=0s a a speed of 9 m/s. The total mass of the car and the driver is 135 kg. Neglect the size of the car.
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
Sand is discharged from the silo at A at a rate of 46 kg/s with a vertical velocity of 10 m/s onto the conveyor belt, which is moving with a constant velocity of 1.5 m/s. The conveyor system and the sand on it have a total mass of 810 kg and center of mass at point G. Neglect the thickness of the conveyor.(Figure 1) 1)Determine the vertical component of reaction at the roller support A 2)Determine the horizontal component of reaction at the pin support B 3)Determine the vertical component of reaction at the pin support B
4 m M = (30t²) N•m F = 15t N. If the rod of negligible mass is subjected to a couple moment of M=29t2 N;M where t is the time in seconds, and the engine of the car supplies a braking force F= 15t N to the wheels, determine the speed of the car at t= 8s. The car at t=0s a a speed of 7 m/s. The total mass of the car and the driver is 158 kg. Neglect the size of the car.
The uniform slender rod (6.7 kg) is pinned at point O. If a 7.6-g bullet shoots into the rod with a speed of 640 m/s and becomes embedded in it, determine the total angular momentum H (in kg•m²/s) about point O immediately after that. The rod and the bullet are considered one system. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Take g = 9.81 m/s². G 0.2 m ↓ Your Answer: 1 m Answer
15-51. The 30-Mg freight car A and 15-Mg freight car B are moving towards each other with the velocities shown. Determine the maximum compression of the spring mounted on car A. Neglect rolling resistance
14-59. The escalator steps move with a constant speed of 0.6 m/s. If the steps are 125 mm high and 250 mm in length, determine the power of a motor needed to lift an average mass of 150 kg per step. There are 32 steps. *14-60. If the escalator in Prob. 14–46 is not moving, determine the constant speed at which a man having a mass of 80 kg must walk up the steps to generate 100 W of power-the same amount that is needed to power a standard light bulb. 250 mm - 125 mm v = 0.6 m/s 4 m
*15-104. A 4-lb ball B is traveling around in a circle of radius r, = 3 ft with a speed (vg), = 6 ft/s. If the attached cord is pulled down through the hole with a constant speed v, = 2 ft/s, determine how much time is required for the ball to reach a speed of 12 ft/s. How far r, is the ball from the hole when this occurs? Neglect friction and the size of the ball. Bn = 3 ft (UB)1 = 6 ft/s v, = 2 ft/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
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The collar with mass of 0.7 kg is released from rest at position A and travels down the smooth circular rod in the vertical plane. If the velocity of the collar at Point C is 3.3 m, determine the tangential component of acceleration of the collar (in m) at Point C. The spring has a stiffness of k = 140 N and an unstretched length of 0.5 meters. Consider R = 1.7 meters, 0 = 33°, and g =10 A m R/2 D В R
The 750-mm-long spring is compressed by the plate P, which can slide freely on the 600- mm-long vertical bars. The 55.6-kg block is given a velocity of v = 5 m/s when it is x = 2 m above the plate. Determine how far the plate travels down when the block stops momentarily after hitting it. Neglect the mass of the plate. v = 5 m/s P k = 25 kN/m- A h = 2m 600 mm

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