![]() ![]() Adjust the position of the pivot clamp that is near the middle of the meter stick until the meter stick is balanced and level. To find the CG of the meter stick, place the meter stick on the pivot using the pivot clamp located near the center. First attach two metal clamps to the meter stick one at the 10 cm mark and the other near the middle. You will investigate a level meter stick.Ħ Apparatus You should have this apparatus at your station.ħ Part II: Finding the Center of Gravity of the Meter Stick The center of gravity is the single point through which all the weight of the rigid body appears to act.Ĩ Finding the Center of Gravity The weight of a rigid body is a downward force acting at the center of gravity (CG) of the body. You will investigate the equilibrium conditions for a case where some of the forces may be at an angle to the rigid body. become familiar with the two conditions for static equilibrium You will also determine the weight and center of gravity of a meter stick. become familiar with the concept of lever arms and torque 2. The pivot point may be taken to be any point on the rigid body.ĥ Introduction In this laboratory you will investigate the concepts of torque and equilibrium. The torque is l τ = Fl Torques that act to rotate the body in the counter-clockwise direction are positive and those that rotate the body clockwise are negative. the vector sum of torques on the body must be zero F r = 0 r τ = 0 For a simple r linear body fixed at some pivot, torque depends on two things the force vector F and lever arm. the vector sum of forces on the body must be zero and 2. The two conditions for the equilibrium of a rigid body (such as a meter stick) are 1. Conclusion and summaryģ Part I: Introduction Learning about equilibriumĤ Introduction Static equilibrium is defined as a state where an object is not accelerating in any way. Investigation of the level meter stick VI. Finding the center of gravity of the meter stick Calibrating the force probe Investigation of the angled meter stick V. ![]()
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