ECluilibrium OfTorques: \\ l- . , - v a Purpose: Determine how to balance a seesaw. Materials: One meterstick, masses provided. Procedures: Balance the meterstick horizontally. Suspend a 200 g mass 10 cm from the fulcrum. Suspend a 100 g mass on the opposite side of the fulcrum at the point that balances the metrstick. Record the masses and distances from fulcrum in Data Table A. Try to ll in the table with other distances and/or other masses. Data Table A. Trial Small mass (kg) Distance from Large mass (kg) Fulcrum (m) Fulcrum (cm) Use any method you can devise to discover a pattern in the data of Data Table A to reach equilibrium. Questions: 1- You want to balance a 600 kg baby elephant on a seesaw using only your own body weight. The elephant stands 2 m from the fulcrum. How far from the fulcrum must you stand? Remember to use the same units on all calculations. 2- Can a heavier mass be balanced by a lighter one? Explain how. , 3- In this problem nd F(a) and F(b) both directed up. There is another force PM of 42 N acting downward at 4.0 cm from F(a) and 6.0 cm from F(b). Hint: Static equilibrium to solve for the forces. 4- Given that this system of forces is in equilibrium; Find T1 and T2. See gure {,5 w ._ .. ,9\" 'TI oi _ n" . .rv-r \"'9',\" ("'O