Physics 12 Equilibrium Problems 1. A 79kg person is standing at the edge of a 22kg diving board. Determine the magnitude and direction of the forces of the two pillars as shown in the diagram. A - 1.60 m- B 5.00 m

4. Orin and Ann, two paramedics, rush a 60.0 kg man from the scene of an accident to a waiting ambulance, carrying him on a uniform 3.00 kg stretcher held by the ends. The stretcher is 2.60 m long and the man’s center of mass is 1.00 m from Ann. How much force must Orin and Ann each exert to keep the man horizontal? a. Orin = 230 N, Ann = 388 N b. Orin = 201 N, Ann = 411 N c. Orin = 241 N, Ann = 377 N d. Orin = 141 N, Ann = 477 N e. None of the above

Statics and Torque 1. The figure shows a pair of forceps used to hold a thin plastic rod firmly. If the thumb and finger each squeeze with a force of Fr= FF= 11.0 M, what force do the forceps jaws exert on the plastic rod? Jaws Rod FT 8.50 cm 2.70 cm 2. A 75-kg adult sits at one end of a 9.0-m-long board. His 25-kg child sits on the other end. (a) Where should the pivot be placed so that the board is balanced, ignoring the board's mass? (b) Find the pivot point if the board is uniform and has a mass of 15 kg. 3. Calculate FA and Fg for the beam shown below. The downward forces represent the weights of machinery on the beam. Assume the beam is uniform and has a mass of 280 kg. FA 4300 N 3100 N 2200 N F 4.0 m-3.0 m 2.0 m 1.0 m 4. Three children are trying to balance on a seesaw, which includes a fulcrum rock acting as a pivot at the center, and a very light board 3.2 m long. Two playmates are already on either end. Boy A has a mass of 45 kg, and boy B a mass of 35 kg. Where should girl…

The maximum force in each rod can not exceed 1540 N Figure 1m 14 12 m 3 m 2m 1m 2m O 2 m 3m Part A Determine the greatest mass of the crate that can be supported. (Figure 1) Express your answer to three significant figures and include the appropriate units. Wmar = Submit HA Value < Return to Assignment 4 Request Answer ✔ Units Provide Feedback wwww ? D

A mass in translational equilibrium experiences 3 forces. Select the case that most fully and accurately describes the scenario. I. The magnitudes of the 3 forces are equivalent. II. The angles between the 3 vectors are 120 degrees. III. The vector sum of the 3 forces equals 0N. IV. All 3 forces are parallel.   A. III only   B. I only   C. I and III only   D. IV only   E. II and III only