Also this lab teaches about measurement uncertainty can be calculated using the percent error equation. These are the purposes of the lab. My hypothesis of this experiment is that the velocity of an object, the ball rolling down a ramp or falling down, changes at a constant rate, thus uniform acceleration occurs. Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity over time. An object accelerates if its velocity is constantly changing, also known as speeding up or slowing down.
11. The velocity of a body of mass m changes by an amount ∆v in a time ∆t. The impulse given to the body is equal to A. B. C. D. m∆t . ∆v .
Record the readings of the three instruments at eight different speed settings of the tunnel: 15, 20, 25, 30, 35, 40, 45, & 50. 4. Plot two calibration curves with pressure transducer reading as the abscissa and micromanometer reading as the ordinate for the first, and micromanometer versus scannivalve as the second. Convert micromanometer data to read as total pressure in SI units [Pa]. 5.
Centrifugal Force - Is the apparent force that draws a rotating body away from the center of rotation. It is caused by the inertia of the body. 8. Centripetal Force - Is a force that makes a body follow a curved path: its direction is always orthogonal to the velocity of the body, toward the fixed point of the instantaneous center of curvature of the path. 9.
To measure the circumference of the disk, make a mark on the disk and place the disk on the meter stick with the mark coinciding with a meter stick reading. Roll the disk for one revolution along the meter stick to obtain the circumference. Measure and record this value. Do this for each disk. Iv .
The motor torque Tm (Nm) can be approximately modelled as Tm = K I, where K is the DC motor torque constant and I is the motor current (A). The Mechanics The model we are dealing with is a simplified version that neglects the rotational inertia of the wheels and other components of the motor system. The torque on the wheel is directly proportional to the motor torque Tm therefore T = Tm = K I can be directly calculated. The forces we will be dealing with are; the forward propulsion force (F) generated by the rear wheels, the gravitational force (W = M g) and the drag force due to friction (Fd). Mathematical Relationships The relationship between acceleration, velocity and distance will help us to model the performance of the car.
According to Dowding (1988) two levels of analysis can be considered. The first level of analysis (pseudo-static) involves the addition to the sliding mass of an inertial force that is equivalent to the anticipated acceleration times the mass. The next level considers the slope as a rigid block that slides in response to the base motion. Both these traditional analytical techniques have
III. THEORY AND METHOD OF INVESTIGATION: The mechanical equivalent of heat is the relationship between units of heat energy and units of mechanical energy. Heat energy has traditionally been measured in units of calories and likewise mechanical energy is measured in Joules. However, since heat is a form of energy, it also could be measured in Joules. The SI unit for energy has been designated as Joules.
28 October 2008 Introduction: Static and kinetic friction are forces that are a result of two surfaces in contact with each other. Static friction is the force that must be overcome to cause an object to begin moving, while kinetic friction occurs between two objects in motion relative to each other. The kinetic friction force, Ff, kinetic, is defined by Ff, kinetic = μkFN, where μk is the coefficient of kinetic friction and FN is the normal force acting on the object. The maximum static frictional force Ff, max static, is defined by Ff, static = μsFN where μs is the coefficient of static friction and FN is the normal force on the object. The maximum frictional force that must be overcome before movement is able to begin is μsFN.
Coefficient of Friction By Omar Ramadan Partners: Samuel Saarinen Brian Urbancic Feb 23, 2012 Abstract: The coefficient of friction is a number that determines how much force is required to move an object that is held back by friction. The goal of our experiment was to measure the static and kinetic sliding coefficient of friction between two surfaces by using a ramp and measuring its inclination. The premise is that when a solid object is placed on a ramp and the ramp is tilted upward, there is a point that the object starts to slide. That is the angle where the force of gravity is strong enough to overcome the kinetic and static friction. Once the angle, or the inclination, is known, we can then calculate the sliding coefficient of friction between the two surfaces.