Equilibrium Its States and Conditions of Equilibrium Book Problems
Center of Mass or Center of Gravity A body behaves as if its all mass is concentrated at one point called as Center of Mass or Center of Gravity. Even though earth attract every part of it. Below figure shows center of masses of different shapes. Center of Mass of Irregular Shapes: In case of regular shapes it is easier to find the center of mass because of their structure, but can we find the center of mass of an irregular shape? Yes we can. Following are some steps to find the center of mass of the irregular shapes: Step 01: Make small holes on the edges of the irregular shapes. Step 02: Suspend the irregular shape one whole retord stand. Step 03: Hung a plumb line or weight from the pin in front of irregular shape. Step 04: When plumb line is steady, trace the line on the irregular shape. Step 05: Repeat step 2-4 for second and third hole. Couple: A couple is formed by two unlike forces of same magnitude but opposite in direction. The torque produced by two forces will be same