Young's Modulus of a Metre Ruler

3.) Starting with 20g of weight attached to the string on the motor (as seen above) perform 3 experiments with each weight group (20g, 40g, 60g, 80g) and record their voltage, time and current.

A. How did the experiment in Part I demonstrate surface tension? Use your experiment observations when answering this question.

12. Place the magnet on the scale to measure the mass of the object. Record the mass in Data Table 5.

Using Gravitational Force as a Measurement Tool Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Dont forget to save your lab report to your computer Activity 1 Record your data from Activity 1 in the boxes below. Enter the data for the sample you used in each trial (5000 rpm, 10000 rpm, etc) in the appropriate columns and the corresponding g-force, number of layers, and position of layers position results. You will need to use the following formula to assist with your laboratory report G-force 0 00001118 x radius of centrifuge arm x (rpm)2 The radius of the centrifuge arm for this instrument is 10 cm. Speed 5000 rpm 10000 rpm 15000 rpm

BEFORE CONDUCTING THE EXPERIMENT - You should already have submitted to your teacher an EXCELLENT Investigation Design that included:

scale. Use the pulleys to raise the load 10 cm. Measure and record the force

1. Place a plastic measuring trough on top of the digital balance, and press the "tare/on" button so that the mass of the trough will be "ignored." The digital balance should read "0.000 g" after this step.

Mass of the Fulcrum Clamp: _________________(grams) Mass of Clamp with V-wire: ________________(grams) Mass of Weight Hanger: __________________(grams) Balancing point (center of mass) of meter stick, x0 = ____________(cm) Values Case 1 m1 = 100 g m2 = 200 g x1 = 15 cm x2 =_________ Moment (lever) arms r1 = ___________ r2 = ___________ Results *(see note above) τcc = ___________ τcw = ___________ % Diff. __________ Case 2 m1 = 100 g m2 = 200 g m3 = 50 g

Record the sample mass in your notebook. Remember to record all digits on the balance. Closed toed shoes and goggles are REQUIRED for the lab

Lastly, I will be using a piece of string which will be the same piece of string used throughout the experiment.

Step 9: Because we measured the lengths in centimeters rather than meters, we need to calculate are ‘g’ value into m/s2 so we can compare it to the SI unit for acceleration due to gravity. (Eg. 981.4/100 = 9.81 m/s2)

In this experiment, we experimented finding the fundamental quantities of length, mass, and time using many laboratory tools. We used a Vernier caliper, stopwatch, rulerm meter stick, wooden block, metal block, Dial-o-gram, different masses, and circular objects. We took into consideration the uncertainties of many different tools and objects into our experiment. The inherent uncertainties of different measurements and ways to propagate those uncertainties were learned during this experiment.

Below are two tables in which I have recorded the data which I obtained during the experiment. The first table reflects the Relationship between the deflection/flexion of the cantilever and the mass of the load and the second table reflects the relationship between the flexion of the cantilever and the length of the cantilever.

The beam was loaded the mid-length in 2.745 lbs. increments up to 6.745 lbs. The change in clearance of every load step was measured and data was recorded.

The time for one oscillation was found by dividing the amount of oscillations (20) done by the time taken for them= 31.4720 = 1.57s