Lab1- EdwardsA

GENERAL PHYSICAL SCIENCE ANSWER SHEET – MEASUREMENTS & PENDULUM NAME: Alyx Edwards DATE: 01/19/2024     The following procedures are to be completed by you as an individual.   Procedure #1: Metric Measurements Linear Measurement (1/2 point for each row) Object Kilometer Meters Centimeters Millimeters 10 inch line ( cm ) 0.000254 0.254 25.4 254 Notebook paper width (shorter measurement) ( cm ) 0.0002159 0.2159 21.59 215.9 Penny thickness ( mm ) 1.52e-6 0.00152 0.152 1.52 Credit card length (longer measurement) ( cm ) 8.56e-5 0.0856 8.56 85.6 Your height ( m ) 0.001651 1.651 165.1 1651 (1/2 point for each row) Body Part Kilometer Meters Centimeters Millimeters Wrist ( cm ) 0.000127 0.127 12.7 127 Neck ( cm ) 0.0003048 0.3048 30.48 304.8 Waist ( m ) 0.00074676 0.74676 74.676 746.76 1 | Page

GENERAL PHYSICAL SCIENCE ANSWER SHEET – MEASUREMENTS & PENDULUM Procedure #2: Unit Conversions Show all work in the solution box. Use boldface for the answer. (1 point for each problem) Problem Solution with Work Included 1. How many cm. Are there in 3.6 in.? 9.144 2. 6.1 liters equals how many ml.? 6100 3. How many cm. Are there in 7.2 m.? 720 4. 5.6 m. equals how many mm.? 5600 5. 1.02 liters equals how many kL.? 0.00102 6. 10.1 pounds equals how many kg? 4.581283 7. How many km. are there in 488 mi.? 785.36 8. How many seconds are in 5 days? 432000 9. Convert 8 mi/h into m/s. 3.57632 10. Convert 30 km/h into m/s. 8.33333 11. 2 liters equals how many ml? 2000 12. Convert 7 ft to mm. 2133.6 13. How many inches are there in 4.5 cm? 1.77165 14. Convert 45 km into meters. 45000 15. Convert 8.9 ft into meters. 2.667 2 | Page

GENERAL PHYSICAL SCIENCE ANSWER SHEET – MEASUREMENTS & PENDULUM B. Divide the time by 10. What is the measured period of the pendulum? 2.861 C. How does this value compare to the mean period you found in the Gizmo Warm-up? It is off by 0.407 (1/2 point) 2. Design an experiment : To conduct a fair test of the factors that could affect the period of a pendulum, change only one factor at a time. This is known as a controlled experiment . First, design a controlled experiment to find the effect of mass ( m ) on period. Describe your experiment below. For each m, L, g, and degree I will keep everything the same and increase the kg in hopes of the time increasing (1 point for the table) 3. Gather data : Record the results of your experiment in the table below. m (kg) L (m) g (m/s 2 ) θ (°) Time for 10 swings (s) Period (s) 0.5 2.0 9.8 20 25.55 2.555 0.6 2.0 9.8 20 25.58 2.558 0.7 2.0 9.8 20 25.98 2.598 0.9 2.0 9.8 20 25.65 2.565 1.0 2.0 9.8 20 25.8 2.58 (1/2 point) 4. Analyze : What was the effect of pendulum mass on the period of the pendulum? I was not effected any. Investigate : Conduct similar controlled experiments on the effects of length, and angle on the pendulum period. Record your results below. (1 point for the table) Length experiment m (kg) L (m) g (m/s 2 ) θ (°) Time for 10 swings (s) Period (s) 0.5 0.5 9.8 20 12.32 1.232 0.5 1.0 9.8 20 18.5 1.85 4 | Page

GENERAL PHYSICAL SCIENCE ANSWER SHEET – MEASUREMENTS & PENDULUM m (kg) L (m) g (m/s 2 ) θ (°) Time for 10 swings (s) Period (s) 0.5 1.5 9.8 20 22.44 2.244 0.5 1.8 9.8 20 24.56 2.456 0.5 2.0 9.8 20 26.19 2.619 (1 point for the table) Angle experiment m (kg) L (m) g (m/s 2 ) θ (°) Time for 10 swings (s) Period (s) 0.5 2.0 9.8 20 24.8 2.48 0.5 2.0 9.8 40 25.2 2.52 0.5 2.0 9.8 60 26.97 2.697 0.5 2.0 9.8 80 28.16 2.816 0.5 2.0 9.8 100 31.57 3.157 (1/2 point each) 5. Analyze : Look at your data. A. How did changing the length ( L ) affect the period? By increasing each length it made the period times longer B. How did changing the initial angle ( θ ) affect the period? By increasing the degree it made the period times longer 6. Compare : How did the results of your experiments compare to the predictions you made in the Prior Knowledge Questions? While I thought that the period times would increase with the kg change they did not. Instead the length and degree increase changed the period times. 5 | Page