7 g L 7. ||02m || 15 gL 8. ||T2m|| 2 9. ||52m|| = /2gL 2 g L 10. ||T2m| 3 A rod of mass m and length L is hinged with a frictionless hinge at one end. The moment of inertia about the center of mass is -m L². Attached to the end of the rod opposite to the hinge there is a mass of magnitude 2 m. The rod is released from rest in the horizontal 12 position. m 2m What is the speed of the mass 2 m when the rod passes through the vertical position? Consider the mass at the end of the rod to be a point particle. 1. ||T2m|| L 2. ||T2m|| = VgL 3. ||T2m| : 5 g L V %3D 2 15 g L V 4. ||T2m|| = 7 3gL 5. ||T2m|| 2gL 6. ||T2m| 5

5. The measured displacement (m) of either masses of the Atwood's machine for various times is given in the below table. Using Excel to graph the data, the SLOPE of the displacement vs. (time) graph is: It t2(sec²) (sec) (m) 0.4 0.31 0.6 0.7 0.8 1.25 1 1.96 1.2 2.82 1.4 3.84 O 2.3 O 1.96 О 3.92 O 196.0 O 1.0

ere to search Angle Q E Angle P Given the following data calculate the sum of the FQ and FP HORIZONTAL force components. NOTE if your answer is negative put the negative sign in the answer!! Angle Q = 58 deg FQ=881 N Angle P = 51 deg FP = 811 N Answer 76 Check Fo R Fp T B 6 Y N 8 M K Pa alt gr 0°C Mostly cloudy pause # 21:1 40 01/12/2

16. If your experimental value is g = 9.65 m/s² and the theoretical value is g = 9. 80 m/s², what is your percent error (in %)? 17. Suppose you hang a 20-g mass from a spring and it stretches 2.3 cm. What is the spring constant (in N/m) of this spring? 18. What mass (in grams) would stretch the same spring 3.2 cm?