Q6-MTE

6. A 10-g pendulum swings from A to B to C, when it is caught and stopped. As shown in the data table, a student releases the pendulum from 3 different heights, measuring the time it takes to pass through a photogate at B. The pendulum is a cylinder with a diameter of 1.6 cm. A B C D E F G H I J 1 Initial Height (at A) Average Time to pass photogate (s)

2 0.05 0.0173 3 0.1 0.0123 4 0.15 0.0100 5 h t

a. Use the columns in the table to organize the calculations b through i.

You must write out each of the calculations (b through i) for the first given height (row 2). Run the calculations for the second and third heights (rows 3 and 4) on your calculator, but you do not need to show work for these.

b. What is the experimental velocity of the pendulum at B? c. What is the potential energy at A? d. What is the kinetic energy at A? e. What is the potential energy at B? f. What is the kinetic energy at B? g. What is the total energy present at A? h. What is the total energy present at B? i. What is the percent difference between the total energy at A and the total energy at B?

j. In the fourth empty row, write the correct formula you would type in Excel for each calculation.