Problem 1: The uniform thin frame ABC is supported by cable DBE that passes through a frictionless ring at B and by two ball-and-socket joints at A and C. If the tension in the cable is 20 N, determine, (a) the center of gravity of the frame, (b) the weight of the frame, and (c) mass per unit length of the frame.

a 4.0 kg object is placed at rest on a track, and the track is slowly inclined. Given that (mu sub s)= 0.6, at what angle of inclination does the object start to slip?

There is a block loaded with two 0.5 kg masses and is pulled at constant velocity across the table but with an applied force that is parallel to the surface of the table. theta = 0 because the force is of the same diraction as the displacement.  What are the magnitudes of the following forces:  Fg FN Ff

Ans. 11-2.6. In Fig. P-11-2.5, assume P= 200 lb and the coefficient of kinetic friction is 0.5. Find the acceleration of the body under the following conditions: (a) the body is moving rightward; (b) the body is moving left- ward; (c) the body starts from rest. 11.-27. When a 644-1b boat is moving at 10 fps the motor conks out

A 901000 kg spaceship has completed two thirds of its journey from the Earth to the Moon. At this position, what magnitude force would the ship's engines have to supply to be the equilibrant? Assume the mass of the moon is 7.35E+22 kg and the distance between the earth and the moon is 384000_km. 1. А. 3303_N 8536_N 7626_N 5080_N 5214 N F. D. В. Е. С. 9299.N

3) A bar with length `, and mass m is held horizontally by two massless cords as in Figure 1. The bar has non-uniform density, so its center of mass xcm is not necessarily at the center of the bar. The left cord attaches to the wall with angle θ, the right with angle φ. Express all answers in terms of m, g, φ, and θ (or subsets thereof). (i) Draw a diagram with all forces on the bar at their respective locations. (ii) What is the tension in the left cord? Give your answer in terms of m, g, θ, and φ. (iii) What is the tension in the right cord? Give your answer in terms of m, g, θ, and φ. (iv) What is the location of the bar’s center of mass xcm relative to the left most point of the bar (as indicated in Figure 1).

A student of weight 675 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force F→N on the student from the seat is 564 N. (a) What is the magnitude of F→N at the lowest point?

In the figure, block M2 is sitting on a table and is connected by mass-less chords to block M1 and to a vertical wall. The coefficient of static friction between M2 and the table is Us=0.60. Block M1 has a mass of 8 kg. The angle made by the chord and the wall is 55 degrees.  What minimum mass must block M2 have in order to remain stationary and not slide?