A mobile support is maintained in rest by a stuck cable in C and by rolls without friction in A e B. For the structure shonw in the picture, determine (a) the traction in the cable and (b) the reactions in A and B.

Fundamentals of BlUmUT If the diving board has a total weight of 1500 N, determine the reactions on the beam at points A and D. Answers: RA 2318 N (1) Rp = 4602N (1) Problem 4.3 The uniform, horizontal beam shown in Fig. 4.50 is hinged to the ground at point A and supported by a friction- less roller at point D. The distance between points A and B is 1 = 4 m and the distance between points A and D is d = 3 m. A force that makes an angle B= 60° with the horizontal is applied at point B. The magnitude of the applied force is P = 1000 N. The total weight of the beam is W = 400 N. %3D d A By noting that three-quarters of the beam is on the left of the roller support and one-quarter is on the right, calculate the x and y components of reaction forces on the beam at points A and D. Fig. 4.50 Problem 4.3 Answers: Rp = 1421 N (↑) RAX 500N (-) RAy %3D 155N (1) %3D Problem 4.4 The uniform, horizontal beam shown in Fig. 4.51 is hinged to the wall at point A and supported by a cable attached to…

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Problem 5 FN 4.5N K 20 B. 60 7.5N A small ring Pis threaded on a fixed smooth horizontal rod AB. Three horizontal forces of magnitudes 4.5N, 7.5N and FN act on P (see diagram). () Given that these three forces are in equilibrium, find the values of F and 0. (i) It is given instead that the values of F and 0 are 9.5 and 30 respectively, and the acceleration of the ring is 1.5 ms. Find the mass of the ring.

4. A garage door (8 ft by 10 ft) weighs 200-lbs is pulled with a constant 25-lb horizontal force to open it as shown. Assume the door rollers (A & B) are frictionless and the door does not rotate or lift off rollers A & B. G is the center of mass of the door. Determine: a. Reactions forces at each roller support (A & B) b. The constant acceleration of the door. c. The time for the door to move 10 feet. Assume it starts from rest. Draw FBD and write governing equations. Show all work. 8 ft 1 ft 5 ft 4 ft -8 ft 10 ft B 3 ft 25 lbs

(1) A 50 lb roller, with diameter 10 in, is used to level a tile floor, and is resting directly on the subflooring as shown. If the thickness of the tile is 30° 0.25 in, what is the minimum force P required to pull the roller onto the tiles when it is pulled slowly to the right? Fig. P4.75 and P4.76

4.7 A hand truck is used to move a compressed-air cylinder. Knowing that the combined weight of the truck and cylinder is 180 lb. determine (a) the vertical force P that should be applied to the handle to maintain the cylinder in the position shown, (b) the corresponding reaction at each of the two wheels.

Question 2: 600 N A EO 1 2.5 m B- I 2.5 m D+ 2.5 m 2.5 m A 600-lb horizontal force is applied to pin A of the frame shown. Determine the support reactions and the forces acting in the joints on the two vertical members of the frame.

4.142 Do not type

A uniform pole of 2.5m length and 4.0kg mass is suspended horizontally fromthe side of a building where it is affixed with a hinge. It is held in place by awire that extends from the unattached end of the pole at an angle of 53 degrees andattached firmly to the wall. A 10.0kg mass is hanging from the end of the poleas well under the influence of gravity.a. Draw a picture of the situation.b. Draw a comprehensive free body diagram showing the force on the wire,the mass, the pole, and both the horizontal and vertical forces on thehinge.c. Use the hinge as the axis of rotation and balance the vertical torques anddetermine the tension in the wire.d. Use inertial dynamics to find the horizontal and vertical forces on thehinge.