In the figure below, each ball has a mass of 2 kg, and the mechanism is initially at rest. The central rod is subjected to a moment of M 5 N-m. Assume thesize of the two balls is negligible and the mass of the two rods are negligible. Answer the following question.43) Is angular momentum conserved? Justify your response.M0.5 m

Torque is defined as rate of change of momentum.Torque=dL/dt.Here we are given that torque is 5Nm…

Answered: In the figure below, each ball has a…

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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The figure depicts two pucks on a frictionless table. Puck 2 is four times as massive as puck 1. Starting from rest, the pucks are pushed by two equal forces. 1-Which pucks will have the grater kinetic energy upon reaching the finish line? 2- Which puck will reach the finish time first ?
consider the mass and pulley system in the attached file. mass m1 = 29 kg and mass m2 = 12kg. the angle of the inclined plane is given and the coefficient of kinetic friction between mass m2 and the inclined plane is uk = 0.12. assume the pulleys are massless and frictionless if the system is released from rest, what is the speed of mass m2 after 2.5 s? v(2.5 s) = ?
A “swing ride” is shown in the figure. For b=1.6 m , L=3.8 m and θ=31o ,neglect the mass of the cables and treat the chair and person as one particle with mass m=33 kg:
Forming a shock absorber, two springs of equal length are nested together. If the maximum compression of the springs is 0.25 and the outer spring has a stiffness of Ka = 420 N/m, what stiffness is required of the inner spring Kb? The design of the spring system is such that if a mass of 2.5 kg is at rest, then dropped from a distance of 0.75 m above the springs, the spring system will catch and stop the mass.
An empty freight car with a mass of 10,000 kg rolls at 5 m/s along a level track and collides with a loaded car with a mass of 20,000 kg, standing at rest with brakes released. Friction can be neglected. If the cars couple together, find their speed after the collision. a. Find the decrease in kinetic energy as a result of the collision. b. With what speed should the loaded car be rolling towards the empty car for both to be brought to rest by the collision? Please show the given, formula, figure, and free body diagram.
A mass of 20 kg is suspended from a spring of stiffness 10000 N/m andthe vertical motion of mass is subjected to coulomb friction of magnitude50 N. if the spring is initially displaced 5 cm downwards from its staticequilibrium position. Determine the number of cycles before the bodycomes to rest.
A spring with spring constant k=70 kN/m is used to stop the box of mass m with initial velocity V1= 7 m/s. The spring is initially compressed 100 mm with cables. Since the box produces a maximum compression x=60 mm in the spring. m= 60 kg. s=750mm(a) Find the kinetic coefficient of friction between the surface and the box.(b) Find the velocity of the box as it moves back from its original position.
Bicycle wheels are manufactured having thin rims and tires of total mass D per unit length, and the spokes and axle may be ignored. Find the angular momentum of one bicycle wheel of radius r when the bicycle is traveling at velocity v, and hence comment upon whether you would prefer large wheels or small wheels to make a bicycle easiest to balance when riding it.
Two propellers of lengths and masses l, L and m, M rotate in the same direction, as shown in the figure. If the left propeller starts from rest, w1=0 and the right propeller starts with an angular velocity equal to w2, find the angular velocity with which the right propeller ends up after both propellers have collided.
show a derivation of the kinetic energy rotation about a fixed axis by proving an equation of T=1/2 Io w^2.
consider the mass and pulley system in the attached file. mass m1 = 29 kg and mass m2 = 12kg. the angle of the inclined plane is given and the coefficient of kinetic friction between mass m2 and the inclined plane is uk = 0.12. assume the pulleys are massless and frictionless when mass m2 moves a distance 4.94 m up the ramp, how far downward does mass m1 move? d= ?
Two blocks with masses m1 = 5.0 kg and m2 = 7.0 kg are attached by a string as shown in the figure below, over a pulley with mass M = 2.0 kg. The blocks are released from rest. The pulley, which turns on a frictionless axle, is a hollow cylinder with radius 0.050 m over which the string moves without slipping. The horizontal surface is frictionless. Find the speed of the system when the block of mass m2 has dropped 2 m.

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