Moment of Inertia and Translational Motion
Problems deal with moment of inertia and translational motion. See attachment for diagrams. 1. Calculate the mass moment of inertia about the x axis. The total mass of the object is 13 kg. a. 281 kg-cm2 b. 210 kg-cm2 c. 156 kg-cm2 d. 233 kg-cm2 e. 176 kg-cm2 ________________________________________ ...continues
How do you find the equation of motion for an idealized model? For this model how do you find the periodic time (time in sec) and the natural frequency (rad/sec)? Please see attached for diagram.
I have a mass-spring-damper system that is tested to determine the value of the viscous damping cefficient c. Assume k=10lb/ft and m=2 slug. The vibrational amplitude is observed to decrease to 33% of its initial value after two consecutive cycles. How do I deduce the value of the logarithmic decrement? How do I deduce the v ...continues
In this idealized model, m=1 slug, k=9lb/ft, and the viscous damping factor is 0.15. How do I find the range of frequency ratios for which the magnification will be greater than 1? How do I find the forced response for A=1, and forcing frequency of 4rad/sec?
For this two degree fo freedom model, how do I find the matrix equation of motion? How do I find the value of the modal ratios if m1=m2=m, k1=k and k2=3k? If a force of 25sin3t is applied to m2, how do I find the value of the response if m1=m2=1 slug, k1=10lb/ft and k2=30lb/ft?
Mass of Inertia and Angular Acceleration.
1. Two slender rods are welded together at right angles and released from rest as shown. The two welded bars rotate freely around point C. Each bar is 10 lbs and is 1.5 ft long. At release, what is the acceleration magnitude of point B? Please see attached for other 3 qustions and question 1 in full.
Three problems having to do with moment of inertia. I have solved one of them completely thought i need to make sure i did the right thing. The other two i need help setting up. Please send solutions and answer so i can see how your answer was achieved. I would prefer OTA ID#: 103642 to solve these problems. If he does n ...continues
4 problems in dynamics. These following are review questions for final exam coming up in 2 weeks. 1. Find the total energy of the system at the given instant if the 20 kg disc has an angular velocity of 24 rad/s (clockwise), the bar AB has a mass of 2 kg, and the system is 1.5 meters above the ground. Assume the ground as the ...continues
1. The slender bar with a mass of 4 kg is released from rest at an angle of 35 degrees. What is the angular velocity of the bar when it is vertical? a. 0.667 rad/s b. 1.06 rad/s c. 0.888 rad/s d. 1.74 rad/s e. 2.31 rad/s 2. The stepped disk weighs 50 lb and its mass moment of inertia about its center i ...continues
A 1.62 oz golf ball with a 1.70 in. diameter is hit by a club at point P. Velocity magnitude of the ball's center of mass is 180 ft/s after the impact. What is the angular velocity of the ball? (h = 0.2 in.) Please see attached for full question.
