Draw a free-body diagram of the system showing all the forces of the lab
TRANSLATIONAL & ROTATIONAL EQUILIBRIUM Introduction/Objective: For maintenance on large buildings, scaffolding can be hung on the outside. In order for the scaffolding to support workers, it must be in translational and rotational equilibrium. If two or more forces act on the scaffolding, each can produce a rotation about either end. Therefore, either end can be referred to as a pivot point. Scaffolding with uniform mass distribution has all the mass concentrated at its center. In translational equilibrium the object is not accelerating; thus , the upward and downward forces are equal. In order to achieve rotational equilibrium, the sum of all of the clockwise torques must equal to the sum of all the counterclockwise torques as measure from the pivot point. That is, the net torque must be zero. In this lab you will model scaffolding hung from two ropes using a meterstick and spring scales, and use number to measure the force on the scaffolding. Materials: Meterstick Two spring Scales Two Ring Stands Two Clamps Two Meterstick Slides 500-gram Mass 200-gram Mass Procedure: > Note: The left spring scale will be considered the pivot point for this lab, therefore the lever arm will be measured from that reference point. 1) Place the slides on the meterstick, one located at the 10-centimeter mark and one at the 90- topie centimeter mark. Collusive : 0.btony~ x9.1 Determine the mass of the meterstick with slides. Mass = 0. / kilograms 2) Place the ring stands 80-centimeters apart and attach a clamp to each stand. more 608 3) Verify that the scales are zeroed before use, otherwise carefully adjust them to zero. Then, hang a spring scale from each ring stand clamp. 4) Using the meterstick slides, suspend the meterstick from each scale. Read each spring scale and record the force in Data Table 1. Data Table 1 Object Added to Scales Left Scale Right Scale MAST Meterstick w/Slides 0.40 0.40 10\\moliqubo int 500-gram mass 4. 2 0 1. 60 ique of aniblotters. 200-gram mass 1.20 180 Data Table 2 lets loose to slep A7/Torque Object Added Force Lever Arm CW / CCW Meterstick w/Slides 0.8 n 500-gram mass 200-gram mass 0.7 . 9.8 M mig-bos Right Scale Data Table 3 Object Added CW Torque CCW Torque Meterstick w/Slides 500-gram mass 200-gram mass Right Scale Net Torque 5) Hang a 500-gram on the meterstick at the 30-centimeter mark. Read each spring scale and record the new forces in Data Table 1. 6) Now, hang an additional 200-gram mass on the meterstick at the 70-centimeter mark. Read each spring scale and record the new forces in Data Table 1. 7) Using Data Table 1, determine the Force (weight) and lever arm for each object and record it in Data Table 2. Also, indicate if the Force would cause a clockwise torque (CW) or a counter- clock wise torque (CCW). 8) Calculate the torque for each object and record these values in Data Table 3 under the appropriate column. And, calculate the sum of the net clockwise and counter-clockwise torques. Analysis: 1) Draw a free-body diagram of the system showing all the forces