3/60 A child twirls a small 0.1 kg ballattached to the end of a 0.95 m string sothat the ball traces a circle in a vertical planewith a constant angular velocity (w = 5 rad/s).Determine the velocity and acceleration ofthe ball at the upper and lower positions(1 and 2). Also, find the tension T in the stringat these positions.%3D1 mProblem 3/60

Answered: Image /qna-images/answer/e99b438c-2edb-4e6e-9782-9c7e20eb75a4.jpg

Answered: 3/60 A child twirls a small 0.1 kg ball…

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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An object of mass 5kg is given an initial downward velocity of 50 m/sec and then allowed to fall under the influence of gravity. Assume that the force in newtons due to air resistance is -10v, where v is the velocity of the object in m/sec. Determine the equation of motion of the object. If the object is initially 600 m above the ground, determine when the object will strike the ground. Assume that the acceleration due to gravity is 9.81 m divided by sec ^2 and let x(t) represent the distance the object has fallen in t seconds
3/169 The 3-kg sphere is carried by the parallelogram linkage where the spring is unstretched when = 90°. If the mechanism is released from rest at 0 = 90°, calculate the velocity v of the sphere when the position = 135° is passed. The links are in the vertical plane, and their mass is small and may be neglected. 0 I.. 500 mm www 3 kg wˇˇˇˇˇˇˇˇˇˇwwwwww k = 100 N/m 500 mm I.. 500 mm Problem 3/169
In the figure, masses of a sphere of radius r and mass m are compressed between two neglected rods. The length of the bars is indicated by l, and the angle they make with the vertical by the angle. The force applied from the ends of the rods is in the horizontal direction and its magnitude is given by P. Friction between sphere and rods is neglected. Therefore, find the acceleration of the sphere in the vertical direction when the angle is 30º in terms of the given magnitudes. Note: Treat the sphere as the material point.
Q2
Q15. A sphere as shown in Figure Q15 with a mass of 3 kg slides along the bent rod. When x - 2 m the velocity of the sphere is 5 m/s and the tangential acceleration is 3 m/s³. At the position shown, determine the tangent ial and normal components of the force that the rod applies on the sphere. 4 m = 3 kg y = 8 - 0.5x X = 2m Figure Q15
Use work and energy to calculate the final angular velocity (e) of the 10kg bar. The bar has the initial motion shown and displaces 0 = 90°. 2m 3 radis
Determine the following : (a) Tension in each cable when at the bottom (b) the minimum angular velocity in rpm to sustain themotion (refer to the image below)
The rope that is wound around a drum wheel lifts the bucket, as shown in the figure. If the angular displacement of the wheel is given by the expression 0 = (0.7t³ + 1t) rad, where t is in seconds, determine the velocity of the bucket (in ft/s) when t 4.4 s. = 0.75 ft
ATWOOD'S MACHINE Draw a free body diagram of m1 and another free body diagram of m2. Using these diagrams, apply Newton’s second law to each mass. Assume that the tension is the same on each mass and that they have the same acceleration. From these two equations, find an expression for the acceleration of m1 in terms of m1, m2, and g. Compare the expression to your result in Step 5 of Analysis.
The homogeneous cylinder A has a mass of 80 kg, and the mss of the hub can be neglected. The magnitude of the variable force P, is in newtons when t is in sec- onds. The velocity of body B changes from 2 m/s downward when t = 0 to 4 m/s downward t = 5 s. Determine the mass of B. Solve all questions using Impulse and Momentum methods

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