6.) Extra Credit. Turn this in separately. For full credit, show all work...NEATLY. Determine the force of tension in each cable. 40° 60° 12 kg

A driver of a car traveling at 52 km h¹ applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h¹ in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars traveled farther after the brakes were applied?

Determine the height h above the base B at which the resultant of the three forces acts. 220 lb 38" 610 lb 38" 260 lb 38" Answer: h= i B in.

The uniform diving board has a mass of 26 kg. Find the force on the support A when a 69 kg diver stands at the end of the diving board. ... 0.9 m 3.6 m A B

3) A massless bar AC is supported by a pin joint at A and cable CD. Mass m is suspended from bar AC at point B, as shown. Given m-50kg and the following dimensions: AB 1m, BC 3m, angle ACD 30 degrees a. Draw a free body diagram for bar ABC. b. Find the tension in cable CD.

If the galaxy NGC 6643 is 588 million light-years away, what is the lookback time to the galaxy? What does lookback time mean

1. The structure shown is pinned to the floor at A and H. Determine the magnitude of all the support forces acting on the structure and find the force in member BF.

A carpenter holds a 17-lb 2-in. by 4-in. board as shown. If he exerts vertical forces on the board, determine the forces at A and B (use positive if the force is up and negative if down). A Answers: NA = NB = i i 3' -17 34 B 9¹ ! lb ! lb

3. A weight of 200 Newtons (N) is being supported by two wires, as shown below. Find the tension in each wire. (Assume that the system is in equilibrium.) 45° 200 N 30° D 4. For each of the following, compute based on the given information. (a) √ = (4, −5, 1); V = (3, 6, -1) ㅠ (b) || … || = 3; ||7|| = 4; the angle between and √ is

2. The drawing below shows a person with a weight of 584N doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position. 0.840 m cg 0.410 m