Physics - Static Equilibrium Practice Worksheet

Strain is {Ans: B) the ratio of the change in length to the original length.}A non-uniform, 80-g, meter stick balances when the support is placed at the 51.0-cm mark. At what location on the stick should a 5.0-g tack be placed so that the stick will balance at the 50.0 cm mark? {Ans: B) 34.0 cm}A 3.00-m long plank of negligible mass has a 30.0-kg mass at one end and a 40.0-kg mass at the other end. How far from the 30.0-kg mass should a fulcrum be placed so that the plank is {Ans: C) 1.71 m}A 5.0-m long, 12-kg, ladder rests against a smooth vertical wall with the bottom of the ladder 3.0 m from the wall. The coefficient of static friction between the floor and the ladder is 0.28. What distance, measured along the ladder from the bottom, can a 60-kg person climb before the ladder starts to slip? {Ans: D) 1.7 m}An object whose center of gravity is below its point of support, will be in neutral equilibrium. {Ans: false}A uniform beam with a mass of 120 kg and a length of 5.0 m rests on two supports, one at the left