"The uniform bar AB of 15 kg is supported on the horizontal surface with a small roller of negligiblemass. The coefficient of kinetic friction between point B and the vertical surface is 0.3. Calculate theinitial acceleration of end A when the bar is released from rest in the position shown."B-0.3040°2.4 m(Ctrl)

Step 1:The problem revolves around the concepts of static and dynamic friction, as well as the…

Answered: "The uniform bar AB of 15 kg is…

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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3. Two masses are attached by a string. Mass M hangs freely while mass m is on an incline of 30°. M 0 Us If M=5 kg and m = 2 kg, what is the acceleration of the box if the coefficient of kinetic friction of the incline is 0.25? ise oils of boiline aed eismo dum wol on 27210 opateib 101 elave so edT
A 10-kg cabinet is mounted on casters that slides with a coefficient of friction of 0.2 (neglect the mass of casters) on the floor. If a 100-N horizontal force is applied at the centroid, determine (a)find the range of values of h if the cabinet will not tip over (b) the acceleration of the cabinet if it will not tip over(c) what is the reaction at the casters?
The solid homogeneous cylinder shown has a mass of 30 kg and is rotating at 1200 rpm clockwise about a fixed horizontal axis through O. The coefficient of kinetic friction between the brake and the cylinder is 0.20. If the tension in the spring when the brake is applied is 100 N, determine the time required for the cylinder to stop rotating. Neglect the thickness of the vertical members. (Draw FBD)
A 2.6-kg sphere S is being moved in a vertical plane by a robotic arm. When the angle 0 is 39°, the angular velocity of the arm about a horizontal axis through O is 52 deg/s clockwise and its angular acceleration is 220 deg/s² counterclockwise. In addition, the hydraulic element is being shortened at the constant rate of 520 mm/s. Determine the necessary minimum gripping force Pif the coefficient of static friction between the sphere and the gripping surfaces is 0.61. Compare P with the minimum gripping force P; required to hold the sphere in static equilibrium in the 39° position. 2.0 m Answers: P = i 16.92 N P3 = 20.90 N
The uniform rod AB is in equilibrium at the position shown, resting on a horizontal floor and tied to the ceiling with a vertical cord BC. The coefficient of friction between the rod and floor is 0.600. Calculate the translational acceleration (magnitude and direction) of the center of mass of the rod and the angular acceleration (magnitude and direction) of the rod at the instant the cord is cut
A 1.7-kg sphere S is being moved in a vertical plane by a robotic arm. When the angle e is 24°, the angular velocity of the arm about a horizontal axis through O is 57 deg/s clockwise and its angular acceleration is 222 deg/s² counterclockwise. In addition, the hydraulic element is being shortened at the constant rate of 430 mm/s. Determine the necessary minimum gripping force Pif the coefficient of static friction between the sphere and the gripping surfaces is 0.56. Compare P with the minimum gripping force P3 required to hold the sphere in static equilibrium in the 24° position. 2.1 m Answers: P = i N P = i
Find the rato of masses m1/m2
A 3.9-kg sphere S is being moved in a vertical plane by a robotic arm. When the angle 0 is 27°, the angular velocity of the arm about a horizontal axis through O is 52 deg/s clockwise and its angular acceleration is 179 deg/s² counterclockwise. In addition, the hydraulic element is being shortened at the constant rate of 600 mm/s. Determine the necessary minimum gripping force P if the coefficient of static friction between the sphere and the gripping surfaces is 0.46. Compare P with the minimum gripping force P required to hold the sphere in static equilibrium in the 27° position. 2.0 m Answers: P= Ps= i Z Z N N
Prism 1 of mass ml and with angle sits on a horizontal surface On the prism, a bar 2 of mass m2 is positioned. Find the prism's acceleration assuming there is little friction. 2 1
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4. The roller is 50 lb. If P = 30 lb, determine; a) the angular acceleration b) the coefficient of friction. Assume the roller to be a uniform cylinder and that no slipping occurs. ( P 30° 1.5 ft
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