torque equilibrium and center of gravity lab report

#TORQUE EQUILIBRIUM AND CENTER OF GRAVITY LAB REPORT FULL#

The weight we now have hanging at the left end would cause the weightless beam to flip counterclockwise pretty fast. So how can we use torque to determine the actual weight of the beam when it's scattered along its whole length? That is, where is the beam? Here's another way of asking the question: Suppose we could replace our beam with a weightless beam.

#TORQUE EQUILIBRIUM AND CENTER OF GRAVITY LAB REPORT FULL#

But its weight is actually distributed evenly along its full length, which extends in both directions from the pivot. Confirm that Torque = Force Times Lever Arm for a Horizontal LeverĤ What total weight was required, including the clamp and hanger? We now have a situation where the beam's weight is being balanced by the weights we added at 0 cm. You will need this sheet to record your data. We'll see this system later with magnetism, which is even weirder and employs even more embarrassing hand gestures! Procedure Please print the worksheet for this lab. This time, your thumb needs to point out of the screen to indicate the direction of the torque. The beam will also flip counterclockwise. Keep clicking and you'll see it eventually switch to positive values, and when the numbers get large enough, the info box will go blank, meaning that it's no longer approximately in equilibrium. It's less out of balance, but still negative. Add another 2 'grams.' You probably see something like –1.100 units. This means that the beam is out of balance by that much clockwise torque. Note the magnitude of the negative net torque: something like –1.585 units. Notice how that matches the first bullet in this step. Your fingers are now wrapped so that they're 'pointing' clockwise, in the direction of the torque, and your thumb is pointing into the screen. Now turn your hand so that your thumb is pointing into your computer screen at the center of the beam. OK, this is sort of weird, but-close the fingers of your right hand with your thumb pointing upward.

The right end will fall, so there is too much clockwise (cw) torque, which is negative. Decrease the buoyancy until the beam is just out of balance. Set the apparatus as it was at the end of step 8. a torque that would tend to cause r to rotate counterclockwise (ccw) is a positive torque, and its direction is out of the page.Thus, the rod can only rotate in the plane of the page.

The rod is hinged so that it can rotate around its axis of rotation, which is normal (perpendicular) to the page. Consider the three forces, F, in Figures 2a–c. Forces that tend to cause rotation are said to apply a torque to the objects they act on. When this occurs, the cart moves along some new path and often spins. (This assumes no wobbly, squeaky wheels-generally a bad assumption.) But as we know, bad things can happen at the end of the aisle when paths cross and carts can end up spinning off into the produce section. As you know from experience, this can be accomplished by pushing straight ahead on the center of the handle of the cart or by pushing equally on the two ends of the handle. The forces acting on a grocery cart traveling along an aisle could only be exerted in such a way that no rotation of the cart was produced. Theory Torque Up to this point in physics, we haven't allowed forces to act in such a way as to cause rotation. Figure 1: The beam balance apparatus Simulation and Tools Open the Rotational Equilibrium simulation to do this lab.

Torque equilibrium and center of gravity lab report