Engineering Mechanics: Dynamics (14th Edition)
14th Edition
ISBN: 9780133915389
Author: Russell C. Hibbeler
Publisher: PEARSON
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Chapter 15.9, Problem 2RP
The coefficient of kinetic friction between the block and the surface is μk = 0.4. If the block is initially moving up the plane at v0 = 2 m/s, and at this instant (t = 0) the motor develops a tension in the cord of
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8) A block weighing 50-kg is being pulled up the incline as shown below. The coefficient of kinetic friction between
the block and the surface of the incline is 0.4. If the block is initially moving up the plane at 2m/s and at this
instant (t = 0) the motor develops a tension in the cord of T = (300 + 120vt) Newtons, where t is time in
seconds. Determine the velocity of the block at t = 2s.
Motor
V=2 m/s
30
The force F= 40s , acting in a constant direction on a 50-kg block, has a
magnitude which varies with the position s of the block. Determine how far the
block must slide before its velocity becomes 15m/s. When s=0, the block is moving
to the right at v=10 m/s. The coefficient of kinetic friction between the block and
the surface is µ, =0.32.
2.
400 mm
The spring attached to the mass of m = 0. 5 kg sliding collar has
a stiffness of k = 0.21 kN/m and a free length of 150 mm. If the
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200
Chapter 15 Solutions
Engineering Mechanics: Dynamics (14th Edition)
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If A and B are rolling forward with velocity v and...Ch. 15.4 - If e = 0.7, determine the velocity of each ball...Ch. 15.4 - If the coefficient of restitution between A and B...Ch. 15.4 - If the coefficient of restitution between A and B...Ch. 15.4 - If ball A is released from rest and strikes ball B...Ch. 15.4 - Determine (a) the velocity at which it strikes the...Ch. 15.4 - If the coefficient of restitution between the ball...Ch. 15.4 - If A is given a velocity of 0, while sphere B is...Ch. 15.4 - Determine the initial velocity vA of the ball and...Ch. 15.4 - Determine the initial velocity vA, the final...Ch. 15.4 - If both disks are moving with the velocities shown...Ch. 15.4 - If both disks are moving with the velocities shown...Ch. 15.4 - If the coefficient of restitution between the ball...Ch. 15.4 - If it rebounds to a height of hl, determine the...Ch. 15.4 - If it makes a direct collision with ball B (e =...Ch. 15.4 - If the coefficient of restitution between the...Ch. 15.4 - If they collide with the initial velocities shown,...Ch. 15.4 - 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If the spheres are subjected to tangential forces...Ch. 15.7 - Determine the angular momentum HO of the 6-lb...Ch. 15.7 - Determine the angular momentum HP of the 6-lb...Ch. 15.7 - Determine the angular momentum HO, of each of the...Ch. 15.7 - Determine the angular momentum Hp, of each of the...Ch. 15.7 - Determine the angular momentum HO of the 3-kg...Ch. 15.7 - Determine the angular momentum Hp of the 3-kg...Ch. 15.7 - If the rod is subjected to a torque M = (t2 + 2) N...Ch. 15.7 - If the helix descends 8 ft for every one...Ch. 15.7 - If the helix descends 8 ft for every one...Ch. 15.7 - If the attached cord is pulled down through the...Ch. 15.7 - If the attached cord is pulled down through the...Ch. 15.7 - The blocks are fixed to the horizontal rods, and...Ch. 15.7 - The particle is placed at the position shown and...Ch. 15.7 - The car starts from rest. 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If...Ch. 15.9 - Prob. 141PCh. 15.9 - Air enters the intake scoops S at the rate of 50...Ch. 15.9 - Prob. 143PCh. 15.9 - Prob. 144PCh. 15.9 - Prob. 145PCh. 15.9 - Prob. 146PCh. 15.9 - Prob. 147PCh. 15.9 - Prob. 148PCh. 15.9 - Prob. 149PCh. 15.9 - If the ball then moves horizontally to the right,...Ch. 15.9 - Prob. 2CPCh. 15.9 - If the coefficient of kinetic friction between the...Ch. 15.9 - The coefficient of kinetic friction between the...Ch. 15.9 - If a horizontal force F is applied such that it...Ch. 15.9 - They are traveling along the track with the...Ch. 15.9 - If the projectile penetrates and emerges from the...Ch. 15.9 - If the collision is perfectly elastic (e = 1),...Ch. 15.9 - If A strikes B with a velocity of (vA)1 = 2 m/s as...Ch. 15.9 - If the frame is subjected to a couple M = (8t2 +...
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