To get any object Essay Example for Free

To get any object EssayWith your experiment you dont mention anything about controlling or measuring the force. All you have measured is the (average) period of the object moving in a whirligig. From this you can calculate the average fixture and acceleration. To turn this into an investigating you would need to measure the force pulling the stilt into the circular path. i. e. the tension in the string. At the moment, if you put more effort in the bung bequeath go faster, even if you dont change the radius of the circle, or the mass of the bung. One way to do this would be to include a spring of suitable enduringness into the string and you could possible measure the extension of the spring as you twirl it around to estimate the force. another(prenominal) method Ive seen used is to have the string reelect through a tube-shaped structure. On the bottom end of the string you attach a weight. You twirl the bung around above your head whilst holding the tube until the forces are balanced. If you spin it too slowly the weight drops down, if you go too fast it rises up.You need to discipline the speed of spinning until the weight balances at the decry point. Results There is a fairly simple locution for cicular motion. F = (m X v2) / r F = force (Newton) m = mass of bung (kg) v = speed of bung (m/s) r = radius of circle (m) You must make sure you use the correct units (m not cm, kg not g) to get the formula to contrive correctly. The Force is constant 90 gram = 0. 9 Newton approximately. The mass of the bung is also constant.You can work out the speed using the formula speed = distance / time distance = circumference of circle X 10 time = time for 10 complete revolutions. Analysis Circumference of circle = 2 X pi X r If you rearrange the circular motion formula you get v2 = (F/m) X r F/m is a constant. Conclusions So a graph of V2 (on the y axis) plotted against r (x axis) should give you a straight line. The gradient is equal to (F/m).it is a straig ht line which essence the graph and the results are correct and they are ok and you will be able to use these for a future reference when explaining the stuff in the anlysis. Another method Ive seen used is to have the string pass through a tube. On the bottom end of the string you attach a weight. You twirl the bung around above your head whilst holding the tube until the forces are balanced. If you spin it too slowly the weight drops down, if you go too fast it rises up. You need to adjust the speed of spinning until the weight balances at the correct point.