Please take your time to paraphrase the procedure of "Lab 4: Forces and Centripetal Acceleration" in PCS211 carefully!

Procedure 1.} 2.) 3.} a.) a.) a.) 9.} 10.} Detach the mass m from the spring and string. Measure and record its mass including an estimate of uncertainty. Place the mass back on the string (leave the spring detached]. Loosen the screw that holds the cross arm in place and adjust its position so that the point at the bottom of the mass is about 14cm from the shaft. Fix the scre'ar back in place. Move the pin so that the top of the pin is located just below the point at the bottom of the hanging mass. Measure and record the distance from the center of the shaft to the pin. You will need to use Vernier calipers to determine the radius of the rod. Include an estimate of the uncertainty in this measurement. Reattach the mass to the spring. lThe connecting string should be taut; if it is not. shorten the string or go back and increase the distance between the mass and the shaft. Practice spinning the shaft. 11"ou should be able to spin the shaft at the right speed so that the mac; travels in a circular path directlyr above the pin. Note that when this occurs. string attaching the mass to the rod above it should be exactly 1vertical. A sheet of white paper held behind the pin might be useful in seeing when the mass passes exactly over it. Note: It may be helpful to hold the apparatus down while you are spinning it to increase it's stability. Once you are comfortable that you can maintain a stable speed at the correct radius. have your partner time hov.r long it takes to make 20 full revolutions. Do this three times and average the result. Record all data. Include your estimated uncertainty. Stop the notation and configure the setup as shown in Fig. 3 by attaching the \"mass meter". Pull on your hanging mass scale until the mass m is in static equilibrium directly m'er the pin. Record the value of M that was needed to bring the mass to this position, including uncertainty. Detach the spring, and loosen the screw on the shaft. Move the mass to a larger radius. Go back to step 3 and repeat the procedure for this larger radius. Remember that when the mass is detached from the spring. it needs to hang directly above the pin. Continue to repeat the whole procedure at least 3 times so that you have measurements of T and M for four different radii. Record all your results with unoertainty