Rotation & SHM Review Quiz (MC) | AP Physics 1

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In an experiment, a solid, uniform cylinder of unknown radius R and unknown rotational inertia I₀ about a central axle, is initially at rest. A light string is wrapped around the cylinder, as shown in the figure. The string is pulled with a constant unknown force F₀, causing the cylinder to rotate. After an unknown time interval Δt₀, the string is completely unwound from the pulley and loses contact with it. To collect data, a student has access to a meterstick, stopwatch, and force probe. The cylinder may rotate but cannot be moved off of its axle. Indicate whether the force applied to the cylinder F₀ and the rotational inertia of the cylinder I₀ can be measured directly or calculated from measured quantities in the experiment.

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A horizontal, uniform board of weight 125 N and length 4 m is supported by vertical chains at each end. A person weighing 500 N is sitting on the board. The tension in the right chain is 250 N.

How far from the left end of the board is the person sitting?

• 0.4 m

• 1.5 m

• 2 m

• 2.5 m

• 3 m

• A,B.C

• B,C,A

• C,A,B

• B,A,C

• A

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