torques equilibrium and center of gravity lab

#Torques equilibrium and center of gravity lab free

Restore balance by hanging a known mass from one side of the meter stick. Torques, Equilibrium, and Center of Gravity MaIntroduction An object is an extended collection of particles, and where a force is applied makes a difference.Rotational motion becomes relevant when the motion of a solid extended object or a rigid body is considered. Move the meter stick in its support so that the new pivot point is 10 cm away from its balance point. Then mass the unknown on the pan balance and compare your results. Use one of your known masses to produce rotational equilibrium and compute the unknown mass. After removing the other masses, suspend the supplied unknown mass from a convenient point on one side of the meter stick. How much does the net torque differ from the theoretical value of zero?ĭata: Pivot point on meter stick _ġ. Compare the clockwise and counterclockwise torques.

But the mass times the lever arm differs only by the constant g, the acceleration of gravity, so for the balance condition it serves the same purpose.)Ĥ. (The torque, strictly speaking, is the weight times the lever arm. Compute the mass times the lever arm for each mass. Determine the lever arm associated with each mass and record the values in the data table below. Record the mass values and their positions.ģ. Suspend three masses from the meter stick as indicated in the sketch and move them until you balance the meter stick. Record the point on the stick at with it balances.Ģ. Balance the meter stick in a horizontal position on its knife-edge supports with no weights attached. Why is it not a good idea to use your dishwasher door as a step to get something out of the cabinet above it?ġ. me Balaning petio (cerser of gravity of meterstick, x DATA TABLE1 Moment (lever) arms Values (add m to masses Results Diagram if clamps. Mass of meterstick Average mass of one clamp. Apparatus with Point of Support at Center of Gravity 4Ss9 8 Total mass of clamps. Why is it hard to lift a long board by its end? Question: Torques, Equilibrium, and Center of Gravity T Laboratory Report A. If the invisible partner is the total mass of the board, where is this invisible partner sitting? This poor child has no one to play with, and had to design a 'solitary see-saw'. § Torques § If object’s shape or position changes, the location of CG changes Fig 14.3 Fig 14. If you were caught without a mass balance, how could you get a number for the mass of the rock? Equilibrium, Stability, and Mobility CENTER OF GRAVITY (CG) §Balance point of body §Point where weight of body acts §Point where all forces acting on the body equal summed § Linear forces. Sum of clockwise torques = Sum of counterclockwise torques Write down your thoughts on these questions before beginning the experiment. When more than one torque acts to produce rotation about an axis it is often convenient to divide them into clockwise and counterclockwise torques, and the condition for rotational equilibrium is then This is illustrated in the diagram below for a bicycle pedal at different points in the pedaling motion the force of the rider's foot is more effective in producing rotation because the lever arm is longer. Where the lever arm is the perpendicular distance from the axis of rotation to the line of action of the force. Torque is a measure of a force's tendency to produce rotation and can be defined by This experiment will deal with rotational equilibrium and torques. The two conditions for an object to be in equilibrium are (1) zero net force and (2) zero net torque on the object.

#Torques equilibrium and center of gravity lab free

We can completely describe the motion of any object through space in terms of the translation of the center of gravity of the object from one place to another, and the rotation of the object about its center of gravity if it is free to rotate.Torque and Equilibrium Torque and Equilibrium The center of gravity is the average location of the weight of an object. The center of mass/gravity is a geometric property of any object. By the end of this unit students should be able to.(NeglectĬenter of Gravity & StabilityDemo: Girls vs.

Determine the masses of the objects A, C and D.The figure above is in mechanical equilibrium.