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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.
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First attach two metal clamps to the meter stick one at the 10 cm mark and the other near the middle. The weight of a rigid body is a downward force acting at the center of gravity (CG) of the body. 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. You will investigate a level meter stick.Īpparatus You should have this apparatus at your station. 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. Introduction In this laboratory you will investigate the concepts of torque and equilibrium. The pivot point may be taken to be any point on the rigid body. 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.įor a simpler linear body fixed at some pivot, torque depends on two things the force vector F and lever arm l. 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. Introduction Static equilibrium is defined as a state where an object is not accelerating in any way. Part I: Introduction Learning about equilibrium Webster.Laboratory #6 Equilibrium of a Rigid Bodyįinding the center of gravity of the meter stick Both set-upsachieved equilibrium after adjusting certainĮlements in the system. Relationship of equilibrium, torque and center Weights of 250.0 N, 100.0 N and 120.0 NĪre attached at distances of 1 m, 7 m and 10 m A uniform rod 10.0 m long and weighingġ50.0 N is supported horizontally by props PĪnd R a distance of 2.0 m and 8.0 m from oneĮnd. Weights ofĤ0.0 N and 50.0 N are suspended from the twoĮnds of the rod. A uniform rod 1.00 m long weighs 150.0 NĪnd is supported on some fulcrum. System in which it not moving clockwise orģ. RotationalĮquilibrium, on the other hand, is a balanced It is when all theįorces acting on a particular object add up to System in which it remains at rest and is not Differentiate translational and rotational The body would remain in equilibrium in anyĢ. It is the point at which the entireweight of a body may be considered asĬoncentrated so that if supported at this point Produce torsion and rotation about an axis,Įqual to the vector product of the radius vectorįrom the axis of rotation to the point ofĪpplication of the force and the force vector. Torque, is the measure of a forces tendency to Weight and distance must bring the said set-up Side of the set-up, the combination of the Lastly, by using a 50 g weight andīy positioning it at a certain point at the right G and 20 g at marks 10 cm, 20 cm and 90 cm Mark 30 cm then by placing weights 200 g, 100 Point of support is measured and placed at In set-up B, the initial system where the Which the forces act behaves like a forceĬoncentrated at the center of gravity of theīeam.
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Used in such a way that the meter stick wouldĪgain be balanced. Then, using the weights, the set-up was broughtĪgain into equilibrium by adjusting the weight
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Point of support is placed in another location. Then adjusted in another manner in which the The meter stick was put into equilibrium and TheĬoncepts of center of gravity, equilibrium and There is no net torque acting on the object and If the size and direction of the torquesĪcting on the object are exactly balanced, then Anobject can be acted on by several torques at a The concept of equilibrium is still present. Which is the capability of rotating objectsĪround a fixed axis. In this experiment is the concept of torque In other words, it is the mean position of the The average position of the mass in the object.