Experiment to Calculate Acceleration of Mass and Velocity of Free-Falling Object

Experiment 4: Free Fall Target: Calculate the acceleration when the mass drops to the surface of the earth and calculate the average velocity when there is a total distance of mass travel over a period of time. We need to calculate the acceleration due to gravity and compare it with the standard value of 980 cm / s 2. Next, plot the speed vs. time curve to find the gradient and find the experimental value of g. (The quality of free fall does not take air resistance into account).

In this experiment, the mean gravitational acceleration is determined by measuring the change in the position of the falling object at regular time intervals. In this way the average speed of these intervals is calculated. The average speed versus time curve gives a straight line whose slope is the gravitational acceleration (g). Behr equipment is used to determine gravitational acceleration. The apparatus includes two vertical wires with thin strips of paper sandwiched between them and the weight of the metal ring is designed to fall between the wires along the length of the tape. The spark timer transmits high voltage electrical pulses to the conductor about 60 times per second. Each time a pulse is sent, two main sparks flow through the system. Sparks are transmitted from the wire to the metal belt around the weight. The paper burns a little with the second spark and you can see the location of the instantaneous weight

Near the surface of the earth free falling objects accelerate at a speed of about 8 m / s 2 regardless of mass. When acting on an object with lowered air resistance, the object eventually reaches a final speed of about 53 meters per hour (195 kilometers per hour, or 122 miles per hour) in the case of a human skydiver. The speed of the terminal depends on various factors that can be achieved only when the falling distance is long enough, such as mass, drag coefficient and relative surface area. A typical skydiver that extends the eagle's position will reach its end speed in about 12 seconds. Meanwhile, he falls about 1,400 meters (1,500 feet).

During free fall, when the falling body experiences zero acceleration, that is, when there is no acceleration in the parachute, the terminal speed will be generated. It depends directly on the ratio of resistance to weight. When the gravity acting on the object is equal to the air resistance of the object or the viscous force of the air, the terminal speed is reached. Air resistance is the main factor that an object falls to the final speed because it may cause the object to fall easily.