In this experiment we studied the motion of a vibrating spring. For the first part of the experiment we hooked a 50 g mass holder to the spring and recorded the total mass on the spring as the reference point 〖 M〗_0. The reference or equilibrium position, x_0, of the spring was then observed and measured to be 21.2 cm. The mass load was then increased by 10 g until the total mass load was 110g. I found that as the mass load was increased the displacement from the reference position increased.
Measurements were recorded for each subject. Reaction Time Experiment Results: Group One, the 30 men tested, had a mean reaction time of 191 milliseconds. Group Two, the 30 women tested, had a mean reaction time of 194 milliseconds. | One (Men) | Two (Women) | 1 | 180 | 175 | 2 | 110 | 180 | 3 | 260 | 220 | 4 | 340 | 140 | 5 | 235 | 160
Rochelle decided to compare two plants for 50 days, Memphis plant-which will have the vector drive and Birmingham plant-which will use the existing system and prepare a report. The financial analysts believe that the purchase can be justified if the equipment leads to the average increase in production of atleast 10,000 bricks per day. Since we have to check whether the difference between the mean value of the bricks per day at Memphis plant and Birmingham plant is greater than 10000(for purchase to be justified), we will use hypothesis testing for means and compare the sampling distribution of the mean value of bricks produced in a day. This method is the typical method to solve these kind of problems. Data available is Plant Total Bricks produced in 50 days S (standard deviation) x̄ (mean) Memphis 7484500 3402.46 149690 Birmingham 6902350 3364.68 138047 Hypothesis test In a hypothesis test we assume Ho to be true and try to find evidence that shows otherwise.
We used a vernier caliper to obtain the diameter of those two and therefore, the radius. When adding all the numbers together, we found that the true radius(r) of the orbit was 0.139 m. To find our tension, we needed to find out how much weight we needed to pull the object towards away from the spring and on the tip of the pointer as shown below. The tension needed to pull the mass on the tip of the pointer 1.05 kg. In theory the force of acceleration needed to pull the mass to same exact spot should equal the force of tension multiplied by the force due to gravity. Using Newton’s second law, F=ma, we know that the
I had Emily carry eighty pounds of 20 lb. weights. I asked Emily to guess the amount of weight she was carrying, and she accurately guessed eighty pounds. I then gave Emily a single 40 lb. weight and asked her again to estimate the amount of weight she was carrying.
Gravitational acceleration was found using this formula: g=2ht2 Impact speed of the falling objects was found using this formula: v=2ht Percentage error between calculated values and those obtained from the slope of the graphs were found using this formula: percent error=calculated value-slopecalculated value x100% PROCEDURE Firstly we placed the falling sphere apparatus on the table. Then we placed the meter scale next to the falling sphere
Measure the weight on the ruler and record it in the data table 7. Put the third mass in the spring and wait until it stops bouncing 8. Measure the weight on the ruler and record it in the data table 9. Repeat the measurement two to three time to get accuracy on the readings. Recording Raw Data: Mass/g (+/- 0.1) | (+/- 0.1) cm/1 | (+/- 0.1) cm/2 | (+/- 0.1) cm /3 | Average cm | 0 | 0 | 0 | 0 | 0 | 49.9 | 1.3 | 1.5 | 1.2 | 0.15 | 99.7 | 5 | 4.8 | 4.4 | 0.30 | 199.9 | 13.5 | 13.7 | 13.2 | 0.25 | 499.2 | 38.7 | 38.5 | 38.9 | 0.20 | Processed Raw Data: Force/newton’s | Average extension m | Error bar (+/-
Lab 7: “Newton’s Second Law” Newton’s Second Law Purpose: To find the graphical and mathematical relationship between the Net forces applied to an object, its mass and acceleration. Variables: Independent: -Hanging mass Dependent: -Acceleration -Force pulling on cart Materials: * * Dynamic Cart with pegs * Force Sensor * Motion Detector * Computer with Logger Pro * Lab Pro * Ramp with Pulley * Mass Sets * String Procedure: 1. Assemble the Ramp and pulley system as shown. Attach proper length of String to the Force Sensor, and add a loop at the opposite end for attachment of various weights. 2.
Hookes law Hooke’s Law Due Date: Monday 4th March Science with Ms Goodridge-Kelly Luke Mannix and Peter Lam, 10E Aim To determine how the value of ‘X’ (Distance Stretched) changes when various forces (f) are applied using a spring measure and various weights. Hypothesis The value of X will increase as more force is applied. Equipment 1x Spring Measure 1x 30cm Ruler 1x 50 gram Weight Holder with Hook 4x 50 gram Weights Method 1. The 50 gram weight holder was attached to the end of the Spring Measure. 2.
Using a stopwatch, carefully time 1 period (from A to C to A on the image on front). 7. Do this 3 times for the 10g weight. 8. Repeat the same procedures (5 – 7) with 4 different weights (5 total).