A constant moment M in the clockwise direction is applied to a 20-lb thin disk in contact with an inclined surface. The kinetic friction coefficient is at the point of contact D. Determine the magnitude of the angular acceleration of the disk by neglecting the weight of the link AB, if M = 7.5 lb-ft and =0.4. Present your answer in rad/sec² using 3 significant figures. 1 in = 1/12 ft. 9 in. B M 30° D

A constant moment M in the clockwise direction is applied to a 20-lb thin disk in contact with an inclined surface. The kinetic friction coefficient is at the point of contact D. Determine the magnitude of the angular acceleration of the disk by neglecting the weight of the link AB, if M = 7.5 lb-ft and =0.4. Present your answer in rad/sec² using 3 significant figures. 1 in = 1/12 ft. 9 in. B M 30° D

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

See similar textbooks

Similar questions

Please don't provide handwritten solution .....
The system shown in the figure is released from rest. Assume block A moves down. Use a minimum of five significant digits for intermediary calculations. Enter answers to one decimal place in D2L. A mA = 10 kg mB = 15 kg = 3 kg•m2 uk = 0.1 R = 0.2 m r = 0.05 m Calculate the force of friction on block A in N- Your Answer: Answer units
A solid homogeneous cylinder of radius r = 0.5m and mass of m = 100kg is rolled up a 0 20° incline by a force of P = 350N starting from rest. Compute the velocity vG of the center of mass of the cylinder into 6 seconds of motion. Note: Mass moment of inertia about G is given as IG = (1/2)mr². W,a v,a G m Your answer: 32.2 m/s 80.6 m/s 364.5 m/s 9.5 m/s 444.5 m/s 73.0 m/s
Last three digits 923
In the mechanism below, neglect the inertias of all the links and determine the cable tension force in Newton for when M-195 kg? Aşağıdaki mekanizmada, M-195 kg için uzuv ataletlerini ihmal ederek Newton cinsinden kablo gerilme (çekme) kuvvetini belirleyiniz? B E 3. D 4 cable/kablo M y cable/kablo 9.81 m/s2 0.8 m Hint/İpucu: Pin = (T )w2 Pout = (Mg )w4 = ... ...
A spring of stiffness k = 500 N/m is mounted against the 10-kg block. If the block is subjected to the force of F = 500 N, The kinetic coefficient friction is 0.5. F = 500 N S 5 3 k = 500 N/m www 4 The velocity of block is ...........when stretched of spring (s) is 0.5 m. O 2.8 m/sec O4.8 m/sec O 1.8 m/sec O 3.8 m/sec
7. 2) The lawn roller has a mass m = 55 kg and a radius of gyration about its gravitational center G, kG = 196 mm. It has a handle that connects to its center axle, and the handle is pushed forward with a force F = 420 N at a 45° angle. The coefficients of static and kinetic friction between the roller and the ground are us = 0.11 and Hk = 0.08, respectively. For the sets of parameters listed below, determine the magnitude of the roller's angular acceleration (in rad/s²). 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/s?. F 45° 200 mm A
A box of mass m = 0.7 kg is attached to a rope which is wrapped around a physical pulley with a radius of R = 10.2 cm and a rotational inertia of I = 0.075 kg·m2. When the box is released it starts to fall down with a constant acceleration and, at the same time, the pulley starts to spin up, see the picture below. Assuming that the pulley is frictionless, what is the magnitude of the box's acceleration and what is the tension in the rope? The acceleration of the box, a ? The tension in the rope, T? If the box starts from rest and traveled downwards a distance of h = 28 cm, what is the speed of the box and what is the angular velocity of the pulley? The speed of the box, v =? The angular velocity of the pulley, ω? -------------------------------------------------------------- A Merry Go Round carousel has a radius of R = 2.4 m and a rotational inertia of I = 695 kg·m2. A 75‑kg student is on the carousel at the midpoint between the carousel's center and the rim (at R/2 distance from…
Sketch a free body diagram, Apply the principle of work and energy to the system to find the tension in the rope. Please use solve with the method provided only and apply the relevant kinematic equation(s) Keep final answer in lb*ft/s.
A sphere of mass M and radius R is not necessarily solid or hollow. It has moment of inertia I= cMR2. As shown in the figure, the sphere starts from rest and rolls without slipping down a ramp from height H. It then moves back up the other side, but now with no friction at all between the sphere and the ramp. What height does the sphere reach?
Situation 5: Suppose the coefficient of kinetic friction between me and the plane as shown in figure is µ = 0.2 and that m = 20 kg and m² = 20 kg 53. What is the acceleration of Block A 0.605 -0.605 0.303 -0.303 60° 54. What is the tension on the chord? 80.31 N 72.12 N 78.17 N 66.71 N 1.1 m/s 52. What is mass of block B in order to move 1m up in an inclined when the block initially at rest 18.83 kg 20.41 kg 15.61 kg 25.12 kg 30° 55. What is the time required for block B to reach the top assuming it is initially 2.5 m away. 4.06 S 1.07 s 2.87 s 3.24 s
3) A mannequin on skis with mass m must be mounted in a shop window. The manikin must be placed on a sloping plank with a static coefficient of friction μ. The center of the doll's is at a point with the distances a to the plank when the doll is standing vertically. Other dimensions can be seen in the figure. The shop wants the angle α to be increased until the skier slides down the plank but never rolls down or tips. What is the relationship between μ and dimension a for the boundary angle when the doll turns? In other words, what is the maximum allowed μ?