100 g A 54 g uniform meter stick is to be suspended by a single string à 100-g block hangs from the left-hand edge of the meter stick. Where should the string be attached so that the meter stick is in equilibrium? Briefly explain how you solved the problem. BI 工
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- 3. Two parents are doing some home improvement and their baby falls asleep on a board they are moving (parents of the year). The board is 3.80 m long and the baby is 0.45 m from one end of the board. The parents are holding the board from either edge. The board has a mass of 3.1 kg and the baby has a mass of 10.2 kg. Draw a free-body diagram and label each force and distances. Also choose and mark a pivot point for your board on the drawing. а. b. Write out E F and Ei for your diagram. Don't solve yet. For each of the torques you wrote down in part b, use the right-hand rule to say whether the direction of torque is into the page or out of the page. с.A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 5.04 g coins stacked over the 18.2 cm mark, the stick is found to balance at the 41.8 cm mark. What is the mass of the meter stick? Number i UnitsQUESTION 11 A uniform, 5.0-m-long, 30-kg plank is suspended from a high ceiling by two, uniform, massless, vertical cables. A 70-kg painter is standing 1.5 m from the cable at the right end of the plank. What is the force of the cable on the plank at the right end? 1.5 m 5.0 m а. 117 N b. 225 N С. 453 N d. 628 N е. 784 N
- A 65 kg person is standing on a 25 kg wood board as shown. How far can they go past the left support without the board tipping? 1.5 m 2.5 m Page 4 1.5 m of 4 ZOOM + Find the value of if the system is in equilibrium MA 4-m long, 150-kg steel beam is attached to a wall with one end connected to a hinge that allows the beam to rotate up and down. The other end of the beam is held in a horizontal position with a cable that makes a 27° angle with the beam and is attached to the wall (see (Figure 1)). a.What is the tension force that keeps this beam in static equilibrium? b. A mass of 75 kg is hung from the beam 3 meters away from the hinge (see (Figure 2)). Now what is the tension force that keeps this beam in static equilibrium? c.What is the vertical component of the force that the hinge exerts on the beam?QUESTION 9 A diver of mass 69.8 kg stands on one end of a diving board of mass 24.8 kg, as shown in the diagram. Everything is in equilibrium (since nothing is moving). What is the magnitude of the support force on the opposite end of the diving board? A 1,193 N B 2,237 N C 716 N D 1,491 N
- What is the force of static friction between the top and bottom blocks assuming the surface is frictionless and the surface between top and bottom blocks has no slipping?A diver of mass 62.0 kg stands on one end of a diving board of mass 27.9 kg, as shown in the diagram. Everything is in equilibrium (since nothing is moving). What is the magnitude of the support force on the opposite end of the diving board? 757 N 1,353 N 1,082 N 1,624 NThree children are trying to balance on a seesaw, which consists of a fulcrum rock, acting as a pivot at the center, and a very light board 3.4 m long (Figure 1). Two playmates are already on either end. Boy A has a mass of 45 kg, and boy B a mass of 35 kg. ▼ Part A Where should girl C, whose mass is 25 kg, place herself so as to balance the seesaw? Express your answer to two significant figures and include the appropriate units. for Part A for Part Addo for Part redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A x= Value Units