14-41. A 2-lb block rests on the smooth semicylindricalsurface. An elastic cord having a stiffness k = 2 lb/ft isattached to the block at B and to the base of thesemicylinder at point C. If the block is released from rest atA (0 = 0°), determine the unstretched length of the cord sothe block begins to leave the semicylinder at the instant0 = 45°. Neglect the size of the block.k = 2 lb/ft1.5 fí

Answered: Image /qna-images/answer/96eb1480-5fa1-42e0-a0c8-715ab836ca73.jpg

Answered: 14-41. A 2-lb block rests on the smooth…

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.
14–35. A 1-kg block rests on the smooth semicylindrical surface. An elastic cord having a stiffness k = 30 N/m is attached to the block at B and to the base of the semicylinder at point C. If the block is released from rest at A(0 = 0°), determine the unstretched length of the cord so that the block begins to leave the semicylinder at the instant 0 = 45°. Neglect the size of the block. k=30 N/m 0.45 m 0 B A
The e wheel has a mass of 100 kg and a radius of gyration of ko = 0.2 m. A motor supplies a torque M = (400 + 900) N/m, where 0 is in radians, about the drive shaft at O. Determine the total work done on the system (in kJ) after the loading car travels s = 2.0 m. The mass of the car is 280 kg and initially it is at rest when s = 0 and 0 = 0°. Neglect the mass of the attached cable and the mass of the car's wheels. 30° M 0.3 m
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.
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
The drop gate at the end of the trailer has a mass of 1000 kg and mass center at G. If it is supported by the cable AB and hinge at C. determine the tension in the cable when the truck begins to accelerate at 5 m/s2 to the left.
The ladder has a uniform weight of 80 lb and restsagainst the wall at B. If the coefficient of staticfriction at A and B is μ = 0.4 determine the smallestangle θ at which the ladder will not slip.
-y = 45 - hft k lblft www Ift The 5-lb collar has a speed of 3 ft.s1 at A. The attached spring has an unstretched length of 2- ft and a stiffness of k=17lb.ft1. If the collar moves over the smooth rod, determine its speed when it reaches point B. The height of A is h=9-ft and B is at l=4-ft from the vertical of A
The 5 kg cylinder is released from rest in the postion shown in the figure below. Determine the maximum compression xmax of the spring. The stiffness of the spring is 1800 N/m.
Determine the steady-state angle a if the constant force P = 170 N is applied to the cart of mass M = 27 kg. The cart travels on the slope of angle 0 = 22°. The pendulum bob has mass m = 8 kg and the rigid bar of length L = 1.5 m has negligible mass. Ignore all friction. m P Answer: a = i α 2-1 M Ө O
B5

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