We also worked with a pulley system in which we discovered that we could reduce the force load by one half by using a pulley system with two parallel lines holding weight. However this reduction of force came with a price, we would have to pull it twice as far to get the same distance with the system. INTRODUCTION: Newton’s second law tells how a force is determined. His equation is relevant here as this lab involved the measuring of forces to determine where equilibrium occurred. Newton’s second law is: Force equals mass times acceleration F = m x a (1) On earth all mass accelerates downward toward the center of earth at 9.8 meters per second.
This experiment has resulted in the cold magnets being stronger than the hot ones. In this experiment, the cold magnets collected 38-40 paperclips whereas the hot ones only collected 14-20 paperclips and the room temperature magnets collected 26-35 paperclips. These results have concluded that my hypothesis was correct and that cold magnets do work better than hot or room temperature ones and that climate does have an effect on magnets depending on how significant the cold/hot temperature is. Question What is the effect of temperature on magnets? Hypothesis If I put the magnet in the freezer, it will be stronger than the hot and room temperature magnet because when magnets are chilled they have less kinetic in the magnetic molecules allowing a more consistently concentrated magnetic field until it returns back to room temperature.
Introduction! With the invention of vehicles that can travel at speeds that would have been near impossible for humans earlier on, there are precautions that are needed to be taken to make sure that these vehicles would not cause the death of thousands of drivers and pedestrians. Travelling at high speeds and if a sudden stop were to occur it would be painful if not deadly as the inertia of out body will make it so that our body will continue at the speed of the vehicle for a time until we either are stopped by an object directly connect to the now still vehicle or we were decelerate to the point where we stop which could lead to fatal injury. The seatbelt is an invention that was designed to be the object that is directly connected to the vehicle in an attempt to make injuries from the vehicle less deadly.! !
Write the goal of the labs on levers and pulleys or the question you tried to answer. Answer: To see how changing the relative position of the fulcrum affects the effort force required to lift an object. (3 points) |Score | | | 2. Which observations, experiences, or
Student designed practical investigation Title: Atwood’s Machine (Newtons 2nd law of motion). Partner: Qurban Aim: To explore how two different masses act with each other on a pulley and therefore calculate acceleration a (theoretical and experimental) and the Tension T. Hypothesis: When both masses are the same, there should be no acceleration. The larger the ratio between one mass and the other, the higher the acceleration should be. Materials: Pulley, string, mass 1 + 2, ruler, stopwatch, scissors Apparatus: Theory: Since we are trying to find a, the equations we need are: For experimental a: Transposed to: Theoretical a: For tension: where x = displacement u = initial velocity t = time taken = mass 1 = mass 2 Let Method: 1. Set up the apparatus in the diagram above.
Types of equipment include barbells, dumbbells, pulleys and stacks in the form of weight machines, and the body's own weight in the case of chin-ups and push-ups. Different types of weights will give different types of resistance, and often the same absolute weight can have different relative weights depending on the type of equipment used. For example, lifting 10 kilograms using a dumbbell sometimes requires more force than moving 10 kilograms on a weight stack if certain pulley arrangements are used. In other cases, the weight stack may require more force than the equivalent dumbbell weight due to additional torque or resistance in the machine. Weight training also requires the use of 'good form', performing the movements with the
Introduction The quantity of fission products in a nuclear reactor is dependent on the amount of fission occurring, which is directly related to fuel burnup. Therefore it follows that increased fuel burnup causes a rise in the quantity of fission products. Fission product behavior negatively impacts fuel performance in a number of different ways. The negative impacts on fuel performance that fission byproducts have include fuel swelling, pressure and stress on the cladding, as well as decreased thermal performance of the fuel; all of which limit the amount of burnup a reactor can undergo. The neutralization, reduction, or removal of fission products and subsequently their associated negative effects will allow for higher burnup in nuclear reactors.
The equation used in the experiment was ∫F dt=∫dp=mvf-mvi The left side of the equation is the integral of force over a period of time and the right side being the change in momentum of the object. The equation used to calculate the magnitude of the change in momentum was: △p=m|vf+vi| To have the greatest likelihood of surviving an accident, the time/duration of the collision needs to be as long as possible. The greater the duration of the impact was, the more survivable the impact itself becomes. First the cart used was weighed for later calculations. There were four types of collisions performed.
For the calculation of the reaction moment at the support mounted on an arm, the value for the reaction force is multiplied by the distance at which the force is acting. The values for these reactions are also calculated theoretically and compared to the experimental values which are also found to be coherent. Intro Bending of beams or slender members occurs when there is tangential load acting on the member. This load could be due to the weight of the member alone or a combination of weight and working load, such as a bridge which needs to be engineered to be able to support itself but also a working load. This load could due to vehicles passing over as their combined weight would cause a Load force at various positions on the bridge.
This release of energy rotates the shaft and causes the throwing arm to move in a wide arc, launching the projectile from the attached basket. Trebuchets, on the other hand, do not rely of elasticity. They rely primarily on leverage to send projectiles soaring through the air. They use a “Class 1” lever, where a force applied on one end of the lever, creates motion in the other end to move the throwing arm. This force is provided by gravity when a huge counterweight at one end of the arm falls.