Next, using the equations the total distance the ball would travel was found. After that, the students called over Mr. Neenan so that he could observe the firing of the projectile launcher. The projectile launcher was at the end of the table and the calculated distance was marked off on the floor by a target. The projectile launcher was then set up perfectly horizontal and fired. Part Two: This part of the lab was to hit Mr. Bill with the projectile as he was sitting on the floor.
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
Oscillations of a Mass - Spring System Determination of “K” by the use of a Spring Oscillations System Experiment #3 for AMS320 involves a spring oscillating system to determine the value of “K”, the force value of an oscillating spring system. The spring is secured to a solid point and allowed to hang vertically below the solid stand. On the bottom of the spring is attached a steel ring with in which to attach a known amount of weight in (kg). The weights are added to the ring and the spring is pulled into a small amount of tension and released. The spring will then oscillate up and down and a stopwatch will be used to measure the amount of time it takes the weight and spring system to stretch and recoil ten times.
Fist name, last name Physics ### Lab: Rotational Equilibrium The purpose of this lab was to analyze the physical effects of torques on an object and all the factors that can influence the magnitude of its strength and force. In lecture, we learned that although the magnitude of the force can have a strong effect on the rotational velocity of an object, the location or displacement of that force can have an enormous impact on the force’s effectiveness to do work. In this experiment, we saw, first hand, how a small force can have as much of a dramatic impact on an object as a larger force if the displacement is right. The goal of this experiment was to balance a meter stick at its center of gravity using different weights on opposite ends of the stick. Making the left side our positive direction, and our right, the negative direction was essential in proving algebraically, the results of the experiment.
Dependent variable(s) Angle of refraction Measure the angle with a protractor. Controlled variable(s) The refractive index The position of the Perspex Trace it on a piece of paper, this is where it will be placed it it got moved. Same light source Same ray box Same protractor and unit Use the same protractor Same piece of Perspex Use only one Perspex prism Hypothesis: If a light is shone at the Perspex, then the light will be refracted because of the shape of the Perspex, and because it is pasting through a medium. If the angle of incidence and refraction was measured and calculated the refracted index would be about 1.49, since the refractive index of a substance is always the same. Equipment: - Ray box - Power supply - Wires - Perspex prism - Paper - Ruler and protractor - Single slit slide - Quadruplet slits slide - 2 colored slides Method: 1.
Determination of “g” by the use of a Pendulum This experiment is going to utilize a bob on the end of a string line to determine the value of little “g” by measuring the length of the string and the duration of time it takes for the bob to swing from one fulcrum point back to the same point after swinging 10 times. The justification for the bob swinging 10 times is to generate a more accurate measurement of time. To start the supplies that are required for this experiment are a stable stand for the string to be secured to. A minimum of a two yard line of string to that can be secured to the anchor and a bob and obviously a bob to be attached to the end of the string. We also need a stopwatch to measure the time duration and a measuring tool to determine the length of each experiment.
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
Systematic error in physical sciences commonly occurs with the measuring instrument having a zero error. A zero error is when the initial value shown by the measuring instrument is a non-zero value when it should be zero.1 Systematic error can be caused by various factors that constantly occur which is why they are difficult to steer clear of. The purpose of this experiment is to get acquainted with the effects of systematic errors and the different natures in which they exist leading to the inability to negate errors or losses for further reference future labs. Reagents |Compund |M.W |Amt. Used |B.P/M.P |Density |Structure | |Cyclohexane |84.16amu |“25ml” |80.74° C |0.779g/mL (l) |[pic]2 | |Benzoic Acid |122.12amu |1.00g |250°C |1.27g/ml |[pic]3 | Procedure/Observations 1.)
List of apparatus: one metre rule one stop watch Set up diagram: Method: 1. Student C will hold a meter stick vertically between the thumb and index finger of Student A’s open hand. The meter stick should be held so that the zero mark is level with the tops of the Student A’s fingers. The Catcher should not be touching the meters stick before it falls. 2.
Society is very complex and in practice it would be impossible to control variables that may influence a situation. Therefore although the ability to control variables in laboratory conditions may be seen as a positive/ advantageous, it on the other hand produces a completely artificial environment which would likely never take place in reality. In this sense field experiments would be a better experimental method as favoured by