18–30. Motor M exerts a constant force of P = 750 N on %3D the rope. If the 100-kg post is at rest when determine the angular velocity of the post at the instant 0 = 60°. Neglect the mass of the pulley and its size, and consider the post as a slender rod. 0°, М Р3750N A 4 m 3 m В Prob. 18–30

18–30. Motor M exerts a constant force of P = 750 N on %3D the rope. If the 100-kg post is at rest when determine the angular velocity of the post at the instant 0 = 60°. Neglect the mass of the pulley and its size, and consider the post as a slender rod. 0°, М Р3750N A 4 m 3 m В Prob. 18–30

Name: 18–30. Motor M exerts a constant force of P = 750 N onthe rope. If th
Uploaded: 2024-03-20T06:56:55.000Z
Channel: Bartleby
Description: 18–30. Motor M exerts a constant force of P = 750 N onthe rope. If the 100-kg post is at rest when 0determine the angular velocity of the post at the instant0 = 60°. Neglect the mass of the pulley and its size, andconsider the post as a slender rod.

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

See similar textbooks

Similar questions

18-37 The spool has a mass of 20 kg and a radius of gyration of = 160 mm. if the 15 kg block A is released from rest, determine the velocity of the block when it descends 600 mm.
18-19 The 30 kg disk is originally at rest, and spring is unstretched. A couple moment M= 80 Nm is then applied to the disk as shown. Determine how far the center of mass of the disk travels along the plane before it momentarily stops. The disk rolls without slipping.
Determine the speed v of the 50-Mg mass when it is just over the top of the steel post, if after impact, the maximun stress developed in the post is 550 MPa. The post has a length of L = 1 m and a cross-sectional area of 0.01 m2.Est = 200 GPa, sY = 600 MPa.
17-95 The 20 kg punching bag has a radius of gyration about its center of mass G of kG = 0.4 m. If it is initially at rest and is subjected to a horizontal force F = 30 N, determine the initial angular acceleration of the bag and the tension in the supporting cable AB.
19–58. The pendulum consists of a 10-lb solid ball and 4-lb rod. If it is released from rest when u0 = 0°, determine the angle u1 of rebound after the ball strikes the wall and the pendulum swings up to the point of momentary rest. Take e = 0.6. &
18-9 The pendulum consists of a 10 kg uniform disk and a 3 kg uniform slender rod. If it is released from rest in the position shown, determine its angular from velocity when it rotates clock wise .
17-35. The sports car has a mass of 1.5 Mg and a center of mass at G. Determine the shortest time it takes for it to reach a speed of 80 km/h, starting from rest, if the engine only drives the rear wheels, whereas the front wheels are free rolling. The coefficient of static friction between the wheels and the road is u, = 0.2. Neglect the mass of the wheels for the calculation. If driving power could be supplied to all four wheels, what would be the shortest time for the car to reach a speed of 80 km/h? G 0.35 m A -1.25 m-- -0.75 m
If the cord is subjected to a horizontal force of P = 150 N, and gear is supported by a fixed pin at O,determine the angular velocity of the gear and the velocity of the 20-kg gear rack in 4 s, starting from rest. The mass of the gear is 50 kg and it has a radius of gyration of k0 = 125 mm. Assume that the contact surface between the gear rack and the horizontal plane is smooth.
18-54 The slender 6 kg bar AB is horizontal and at rest and the spring is unstretched. Determine the stiffness K of the spring so that the motion of the bar is momentarily stopped when it has rotated clock wise after being released.
19-31 The 75 kg gymnast lets go of the horizontal bar in a fully stretched position A, rotating with an angular velocity of = 3 rad/s. estimate his angular velocity when he assumes a tucked position B. assume the gymnast at position A and B as a uniform slender rod and a uniform circular disk, respectively.
17-59 The uniform slender rod has a mass m. If it is released from rest when = 0, determine the magnitude of the reactive force exerted on it by pin B when = 90.
The wheel has a mass of 100 kg and a radius of gyration of kO = 0.2 m. A motor supplies a torque M = (40u + 900) N #m, where u is in radians, about the drive shaft at O. Determine the speed of the loading car, which has a mass of 300 kg, after it travels s = 4 m. Initially the car is at rest when s = 0 and u = 0°. Neglect the mass of the attached cable and the mass of the car’s wheels