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QUIZ 13 – Report (Drag of a sphere)

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QUIZ 13 – Report

(Drag of a sphere)

General

Total number of students 23

Attended 21

Missed 2

Average grade 8.88

Standard deviation of grades 0.82

Grade distribution

Grade history

(2)

Attendance history

Comparison with last three years

Comments

• Few students did not convert the angular velocity in rad/s.

• Few students used only the arm length in the velocity calculation, without including the sphere radius.

• Few students interpreted the Re as turbulent, therefore choosing the wrong drag coefficient from the table.

• Few students did not multiply the drag by two in order to account for both the spheres.

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