A simple pendulum is known to have a period of oscillation T

A simple pendulum is known to have a period of oscillation, T = 2.25s. Student A uses an analog wristwatch and the same procedure to calculate an average period for the 5 oscillations and finds T = 2.3s. Student B uses a digital stopwatch to measure the total time for 5 oscillations and calculates an average period T = 2.15s. Which period is more precise, and why? Student A\'s period of 2.3s because it is closer to the known period than B\'s value Student B\'s period of 2.15s because a digital stopwatch is more reliable. Student B\'s period of 2.15s because the stopwatch can measure to 0.01s. There is not enough information to answer this question. What is the least count of the triple-beam balance in the lab? 1g 0.01 g 0.1 cm None of the above A simple pendulum is known to have a period of oscillation, T = 2.25s. Student A uses an analog wristwatch and the same procedure to calculate an average period for the 5 oscillations and finds T = 2.3s. Student B uses a digital stopwatch to measure the total time for 5 oscillations and calculates an average period T = 2.15s. Which period is more accurate, and why? Student A\'s period of 2.3s because it is closer to the known period than B\'s value Student B\'s period of 2.15s because a digital stopwatch is more reliable. Student B\'s period of 2.15s because the stopwatch can measure to 0.01 s. There is not enough information to answer this question.

Solution

1)

Student B is more efficient than A

for the calculation of the % error done by both of the wateches,

So we get

for the Student A is 11.11% and for the student B is 6.97%

so student B is doing less error with respect to student A

2)

B) 0.01 g

Because that is standard and fixed