PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Chapter 19, Problem 41P
To determine
The angle
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A 23-lb sphere A is held at the 60° angle shown and released. It strikes the 8-lb sphere B. The coefficient of restitution for this collision
is e=0.60. Sphere B is attached to the end of a light rod that pivots freely about point O. If the spring of constant k = 89 lb/ft is initially
unstretched, determine the maximum rotation angle of the light rod after impact.
Answer: 0-
19" 60
29"-
29"
The (1)-kg collar is released from rest at A and slides down the inclined fixed rod in
the vertical plane.
The coefficient of kinetic friction is 0.40. Calculate the maximum deflection xof
the spring.
| (2 +d) Kg
0.5 m
Hp = 0.40
60°
k = 1.6 kN/m
The small collar of mass m = 0.64 kg is released from rest at A and slides down the curved rod in the vertical plane with negligible
friction. If b = 0.53 m, and h = 2.17 m, and if the velocity of the collar as it strikes the base B is 6.03 m/s after release of the collar from
rest at A, calculate the work Q of friction. What happens to the energy which is lost?
Answer: Q = i
Chapter 19 Solutions
PEARSON ETEXT ENGINEERING MECH & STATS
Ch. 19 - The 60-kg wheel has a radius of gyration about its...Ch. 19 - Prob. 2FPCh. 19 - Prob. 3FPCh. 19 - Gears A and B of mass 10 kg and 50 kg have radii...Ch. 19 - The 50-kg spool is subjected to a horizontal force...Ch. 19 - Prob. 6FPCh. 19 - The rigid body (slab) has a mass m and rotates...Ch. 19 - Prob. 2PCh. 19 - Show that if a slab is rotating about a fixed axis...Ch. 19 - Prob. 21P
Ch. 19 - The two gears A and B have weights and radii of...Ch. 19 - The 30-kg gear is subjected to a force of P =...Ch. 19 - Prob. 27PCh. 19 - The turntable T of a record player has a mass of...Ch. 19 - The 10-g bullet having a velocity of 800 m/s is...Ch. 19 - Prob. 31PCh. 19 - Disk A has a weight of 20 lb. An inextensible...Ch. 19 - The 12-kg rod AB is pinned to the 40-kg disk. If...Ch. 19 - A thin rod of mass m has an angular velocity o...Ch. 19 - Prob. 41PCh. 19 - Prob. 42PCh. 19 - Prob. 44PCh. 19 - The 10-lb block is sliding on the smooth surface...Ch. 19 - Prob. 46PCh. 19 - The pendulum consists of a 15-kg solid ball and...Ch. 19 - Prob. 48PCh. 19 - The 20-kg disk strikes the step Without...Ch. 19 - The solid ball of mass m is dropped with a...Ch. 19 - Prob. 54PCh. 19 - Prob. 55PCh. 19 - Prob. 56PCh. 19 - Prob. 58PCh. 19 - The cable is subjected to a force of P = (10t2)...Ch. 19 - Prob. 2RPCh. 19 - The tire has a mass of 9 kg and a rad1us of...Ch. 19 - Prob. 4RPCh. 19 - The spool has a weight of 30 lb and a radius of...Ch. 19 - Prob. 6RPCh. 19 - Prob. 7RPCh. 19 - Prob. 8RP
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- The collar has a mass of 2 kg and is attached to the light spring, which has a stiffness of 30 N∕m and an un- stretched length of 1.5 m. The collar is released from rest at A and slides up the smooth rod under the action of the con- stant 50-N force. Calculate the velocity v of the collar as it passes position B. Use point A as datum.arrow_forwardThe ballistic pendulum is a simple device to measure projectile velocity v by observing the maximum angle e to which the box of sand with embedded projectile swings. Calculate the angle e if the 2.7-oz projectile is fired horizontally into the suspended 59-lb box of sand with a velocity v = 2150 ft/sec. Also find the percentage n of energy lost during impact. le 4.4' Answers: e = i n =arrow_forwardThe velocity of the 8-kg cylinder is 0.3 m∕s at a certain instant. The speed v after dropping an additional 1.5 m is 2.5 m/s. The mass of the grooved drum is 12 kg, its centroidal radius of gyration is k = 210 mm, and the radius of its groove is ri = 200 mm. The frictional moment at O is a constant 3 N∙m. Find the frictional force.arrow_forward
- The 2-kg collar is released from rest at A and slides down the inclined fixed rod in the vertical plane. The coefficient of kinetic friction between the collar and the rod is 0.6 and the spring is initially 300 mm stretched. Calculate a) the velocity v of the collar as it strikes the spring and (b) the maximum deflection x of the spring. μk = 0.6 30° 0.6 m k = 1.4 kN/marrow_forwardThe simple 2.3-kg pendulum is released from rest in the horizontal position. As it reaches the bottom position, the cord wraps around the smooth fixed pin at B and continues in the smaller arc in the vertical plane. Calculate the magnitude of the force R supported by the pin at B when the pendulum passes the position 8 = 43° 330 mm 2.3 kg B Answer: R= i 90° 720 mm Narrow_forwardEach of the sliders A and B has a mass of 3.1 kg and moves with negligible friction in its respective guide, with y being in the vertical direction. A 15-N horizontal force is applied to the midpoint of the connecting link of negligible mass, and the assembly is released from rest with θ = 0. Calculate the speed v with which A strikes the horizontal guide when θ = 90°.arrow_forward
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