1. A simple pendulum has a period T on the earth. If it were used on planet X, w
ID: 1267619 • Letter: 1
Question
1. A simple pendulum has a period T on the earth. If it were used on planet X, where the acceleration due to gravity is 3 times what it is on earth, its period would be?
a.3T b. radical3 T c.T d.T/radical3 e. T/3
2. A light triangular plate OAB is in a horizontal plane. Three forces, F1=8N, F2=3N, and F3=7N, act on the plate, which is pivoted about a vertical axis through point O. Figure 10.1, the torque of force F1 about the axis through point O is closest to:
a. 3.0 N*m b. 4.8N *m c. 4.2 N*m d. 3.6N*m e. 2.4 N*m
3. In Figure 10.6, a mass of 40.72 kg is attached to a light string, which is wrapped around a cylindrical spool of radius 10 cm and moment of inertia 4.00 kg. * m^2 . The spool is suspended from the ceiling, and the mass is then released from rest a distance 1.50m above the floor. How long does it take to reach the floor?
a. 3.61s b. 1.82 s c.2.56 s d. 1.73 s e. 0.580 s
4. The period of a simple pendulum in a grandfather clock on another planet is 1.79s. What is the acceleration due to gravity on this planet if the length of the pendulum is 1.00m?
a. 14.8 m/s^2 b. 11.4 m/s^2 c. 13.5 m/s^2 d. 12.3 m/s^2
Explanation / Answer
1-b. radical3 T
2-c. 4.2 N*m
3-a. 3.61s
4-d. 12.3 m/s^2
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