TnetNm) 50.0 40.0 30.0 20.0 10.0 2.0 4.0 6.0 t(3)

Determine the magnitude of the moment about the line "og" of a force of 11 N in the defined direction from point "f" to "b". Where x = 2.2 m, y = 2.5 m, z = 5.7 m

500 N 300 N 2 m 2 m Determine the direction of the resultant moment acting on the system at point O. O CW O CCW O None of the above

A green car with mass 1200 kg is travelling east at 40 m/s. Simultaneously, a yellow car with mass 1500 kg is travelling north at 30 m/s. They collide in a perfectly inelastic collision, such that there is no rotation. a. During the collision, which car experiences the greater force? b. What is the momentum of each car before the collision? c. What is the magnitude of the momentum of the two combined cars after the collision? d. What is the speed (magnitude) of the two cars after the collision? e. What is the direction of the motion of the cars after the collison?

3. The figure to the right shows a rod that is connected to a frictionless table through a pin-labeled by A -placed through the center of it. (You are looking down on the table.) The rod has mass m and length l. Although the rod is initially at rest, it can rotate freely (without friction) about the pin. A small particle with mass m/3, and moving with an initial velocity vo vo collides with the end of the rod. After the collision the mass stops moving, and the rod starts rotating with angular velocity w. I would strongly recommend that you draw a free body diagram for the rod in parts a and b. a. Linear momentum is not conserved for this collision. Explain in detail why. b. Angular momentum is conserved about the pivot. Explain in detail why. c. What is w? Express it in terms of vo, and l. d. Is energy conserved in the collision? Justify your answer by calculating the change in energy of the system in the collision. e. After a time T after the collision the rod will rotate around and…

8. The image below depicts a street light standard that has been blown off of vertical by high winds during storm. A force of 1000N is being applied to the standard in order to "upright" the standard. Determine the magnitude and sense of the Moment about point A at the instant depicted. N-m. Be sure to include whether the Moment is Moment = Positive or Negative for this 2D problem. B 6 m 75° 3 m

250 m/s 140 m/s Pivot A uniform stick 1.0 m long with a total mass of 250g pivoted at its center. A 8.0-g bullet is shot through the stick midway between the pivot and one end. The bullet approaches 250 m/s and leaves at 145 m/s. With what angular speed is the stick spinning after the collision?

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17. A bullet traveling with an initial speed vo enters an door imbedding Hinge itself from the side opposite the hinges, as shown in the overhead view of the figure. Ignoring air resistance and the friction due to the hingers, which of the following statements must be true? a. The angular momentum of the system consisting of the -18.0 kg door and the bullet is conserved. b. The linear momentum of the system consisting of the door and the bullet is conserved. 0.005 kg c. The total mechanical energy of the system consisting of the door and the bullet is conserved. d. The total kinetic energy of the system consisting of the door and the bullet is conserved.

While sunbathing on the balcony of your 3rd floor apartment, you notice a gorilla drop a m = 38.2 kg crate from rest from the roof of the 5-story building across the street. Since you just completed a course on surveying, you know that the two identical buildings are d = 29 m apart, and have floors that are h = 5.1 m tall. The first floor is at ground level, as shown.a. Determine the magnitude of the angular momentum of the crate, in kilogram meters squared per second, as observed by you as it passes the floor of the 4th floor balcony of the other building. Lb =b. Determine the magnitude of the angular momentum of the crate, in kilogram meters squared per second, as observed by you as it passes the floor of the 3rd floor balcony of the other building, directly across from you. Lc =c. Determine the magnitude of the angular momentum of the crate, in kilogram meters squared per second, as observed by you as it passes the floor of the 2nd floor balcony of the other building. Ld =d.…