Question

Data Table 4: Fulcrum at 40 cm F1 (50 g + holder) = 73 g at 10 cm; L? = 50 cm F2 (100 g + holder) = 123 g at 20 cm; L2 = 20 cm F3 (200 g + holder) = 223 g at unknown location Measured L3M = 17.3 cm 74 Using the data from Data Table 4, calculate the value of L3, using the summation of torques, and the % Difference between this calculated L3 and the measured L3M. Calculated L3 = F? × L? + F? × L? - (L3g - 40) × F? L? = \frac{(73 \times 10) + (123 \times 20) - (49.7 - 40) \times 7}{223} 17.3 cm % Diff = % Draw a neat diagram to illustrate this system in the equilibrium condition. Show the masses and their locations. Using torque equation to prove L3 = (F?L? + F?L? - (L3g - 40) ? F?) / F?.

          Data Table 4: Fulcrum at 40 cm
F1 (50 g + holder) = 73 g at 10 cm; L? = 50 cm
F2 (100 g + holder) = 123 g at 20 cm; L2 = 20 cm
F3 (200 g + holder) = 223 g at unknown location
Measured L3M = 17.3 cm
74
Using the data from Data Table 4, calculate the value of L3, using the summation of
torques, and the % Difference between this calculated L3 and the measured L3M.
Calculated L3 = F? × L? + F? × L? - (L3g - 40) × F?
L? = \frac{(73 \times 10) + (123 \times 20) - (49.7 - 40) \times 7}{223}
17.3 cm
% Diff = 
%
Draw a neat diagram to illustrate this system in the equilibrium condition. Show the
masses and their locations. Using torque equation to prove
L3 = (F?L? + F?L? - (L3g - 40) ? F?) / F?.

Data Table 4: Fulcrum at 40 cm
F1 (50 g + holder) = 73 g at 10 cm; L? = 50 cm
F2 (100 g + holder) = 123 g at 20 cm; L2 = 20 cm
F3 (200 g + holder) = 223 g at unknown location
Measured L3M = 17.3 cm
74
Using the data from Data Table 4, calculate the value of L3, using the summation of
torques, and the % Difference between this calculated L3 and the measured L3M.
Calculated L3 = F? × L? + F? × L? - (L3g - 40) × F?
L? = ((73 ×10) + (123 ×20) - (49.7 - 40) ×7)/(223)
17.3 cm
% Diff =
%
Draw a neat diagram to illustrate this system in the equilibrium condition. Show the
masses and their locations. Using torque equation to prove
L3 = (F?L? + F?L? - (L3g - 40) ? F?) / F?.

Added by Kyle S.

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