A hollow steel ball weighing 4 pounds is suspended from a spring. This stretches the spring - feet. The ball is started in motion from the equilibrium position with a downward velocity of 8 feet per second. The air resistance (in pounds) of the moving ball numerically equals 4 times its velocity (in feet per second). Suppose that after t seconds the ball is y feet below its rest position. Find y in terms of t. (Note that the positive direction is down.) Take as the gravitational acceleration 32 feet per second per second. y =

A hollow steel ball weighing 4 pounds is suspended from a spring. This stretches the spring - feet. The ball is started in motion from the equilibrium position with a downward velocity of 8 feet per second. The air resistance (in pounds) of the moving ball numerically equals 4 times its velocity (in feet per second). Suppose that after t seconds the ball is y feet below its rest position. Find y in terms of t. (Note that the positive direction is down.) Take as the gravitational acceleration 32 feet per second per second. y =

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
2.) Figure (a) below shows a time variation of the force (P) which is applied on a block which weighs 25 lb as shown in Figure (b). Assume that the block is initially at rest and μk = μs = 0.15 a.Find the time at which the body start to move b.Find the velocity of the body after 3 seconds.
5. A simple pendulum at the UCR department of physics and astronomy has a length of 20 m, and the acceleration due to gravity at this location is measured to be 9.803 m/s². Calculate the period of the pendulum.
Plz solve within 30min I vill give definitely upvote and vill give positive feedback
Q3. One ball of mass m = 0.7 kg is being swung in the vertical, circular path with radius of r = 2.3 m. At the instant shown, the ball is moving at a speed of v = 5.8 m/s. Determine the tension force in the cable OA. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper Sl unit. Take g = 9.81 m/s². Your Answer: Answer A 45° units
PLEASE SHOW COMPLETE SOLUTION. USE IMPULSE-MOMENTUM METHOD.
Find the equations of motion of the system using the law of conservation of energy.
K=200 N m www A 10 kg MK = 0.1 B боку B 1 System starts from rest. Determine the velocity of" after B has fallen down 0.5m 0.5m *System starts from rest* Determine the Velocity of "A" after B has fallen down 0.5m. (Spring Constant 'K' =200N/m) (Friction Coefficient =0.1) (Mass of A=10kg) (Mass of B= 60kg) "1 "A"
3- A particle of mass m moves along a frictionless, horizontal plane with speed given by v(x)=k/x, where x is its distance from the origin and k is a positive constant. Find the force F(x) to which the particle is subject.