Q12. The two tugboats each exert a constant force F = 20 N on the ship as shown in Figure Q12 These forces are always directed perpendicular to the ship's centerline. If the ship has a mass m and a radius of gyration about its center of mass G of kG, determine the work done of the ship after it turns 80°. The ship is originally at rest. Where d = 6 m.,

Q12. The two tugboats each exert a constant force F = 20 N on the ship as shown in Figure Q12 These forces are always directed perpendicular to the ship's centerline. If the ship has a mass m and a radius of gyration about its center of mass G of kG, determine the work done of the ship after it turns 80°. The ship is originally at rest. Where d = 6 m.,

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter6: Beams And Cables

Section: Chapter Questions

Problem 6.74P: One end of cable AB is fixed, whereas the other end passes over a smooth pulley at B. If the mass of...

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The rod AB has a mass of 20 kg，the mass of the piston A and B are both 5kg. Piston B is attached to a spring of constant k = 1200 N/m. The spring is un-stretched when θ = 0. If the rod is released from rest whenθ = 45° Please find÷ (1) the moment inertia of the rod AB about its mass center G (2)The angular velocity of rod AB at θ = 0° (3）the velocity of piston A at θ = 0° (4) the velocity of Piston B at θ = 0° (hint: regard the piston A, B, rod as a system, during the motion, except the spring, the weight of rod AB, the weight of pistonB also does work). g = 9.8 m/s2
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