Please I need help with this lab. Thank you in advance.

Lab 14: Centripetal Force (Adapted from Merrill Laboratory Physics (1990)) Introduction If no net force acts upon a moving object, it will travel in a straight line with no change in speed. To quse an object to travel in a circular path. a force constantly perpendicular to the direction of motion .must act upon the object. This force, called the centripetal force, will therefore always be directed "owards the center of the circle Rubber stopper Masking tape Figure 14-1. The weight of the washers produces tension in the curd which canus the cropper to meincur a circular 1 As the weight is changed, the speed of the stopper must change if the relius of No Emnata vorstandObjectives During this laboratory investigation students will: Study circular motion experimentally Graphically analyze the relationship between centripetal force and velocity. Pre-lab Questions 1. What will happen to the radius of the object in circular motion if it is swung too quickly? Assuming Force stays same as V increases , rating would have to increase 2 What is the equation for centripetal force? F = mv V = C ar t Material Centripetal force kit 25 Washers Masking tape Stopwatch Meter suck 5x Safety goggles Adjust radius keep I same , measure t Procedure repeat at 2 other F 1 Unravel the centripetal force kil fromhis cardboard holder While holding the holles the and the end of the string with the paper clip. try whirling at above your head in a circular horizontal path You will find that when you whirl the stopper faster, you will need to hold ine string with more force in order to keep the radius of curvature constant. Thus, the force (tension in the string must increase with the speed of the stopper 2 Adjust the masking tape flag below the the i as seen in Figure 14-1, so that the distance from the center of the stopper, along the string, to the top of the hollow tube is approximately 50 m This length will be the radius of curvature ir. Place your measurement reading in the Data and Calculations section From this data, calculate the circumference of the circle.3. Allach five washers onto the paper clip. Practice whirling the stopper in a circular horizontal path above your head It is important that the hollow tube move as little as possible. The stopper is traveling at the desired speed when the weight of the washers just supplies the centripetal force needed to keep the masking tape flag suspended in place just below the tube. 4. When the stopper is moving with the desired rotational speed, have your lab partner use the stopwatch to measure the time it takes the stopper to complete 30 revolutions. Place your observed times in Table 14-1. Redo this timing if at any time during recording the flag moves from its suspended position. 5. Calculate the time for one revolution of the stopper. From this data and the circumference. determine the speed of the stopper in meters per second, Record this speed in Table 14-1 6. Add five more washers and repeat Steps 4 and 5. Repeat this procedure three more times, each time adding five washers until the total weight is 25 washers. Data and Calculations Idius of Curvature (r) Circumference = Table 14-1 Force Time for 30 Time for Speed Speed: (Number of Washers) Revolutions (s) I Revolution (s) (m/s) 10 15 20 25Force Time for 30 Time for Speed Speed [Number of Washers) Revolutions Isl 1 Revolution (s) (m/s] 5 10 15 20 Name Plot radius vs v ( ) " Plot Force vs v ? ( keep same)Interpretation In this experiment, you varied the force (number of washers) in each trial Therefore. force is the independent variable. However, in this interpretation, plot force on the vertical axis and speed on the horizontal axis.Name 2 Plot force on the vertical axis and the square of speed on the horizontal axb101 Name radius 3. What does the shape of the I "graph Foreevs Speed) reveal about the relationship of the run variables? 4. What type of graph do you obtain when plotting Force us. Speed'? What does this graph tell you about the relationship between the two variables? 5. Find the equation for centripetal force from your Pre-lab Questions. Do the results of this experiment support this equation? Explain