AP CallogeBoard AP PHYSICS 1 Test Booklet TorqueExpDesignFRQ 1. This question is a long free-response question. Show your work for each part of the question. T-Shaped Apparatus ing - T = ma H = Id + = ma T. R= Zmp le mg - T - ina R Table Pulley- T = String 2 ma T. = Fr sing my Block T mg ma displacement Z I (12 points, suggested time 25 minutes) A light string is attached to a block, passes over a pulley, and is wrapped around a T-shaped apparatus, as shown above. The pulley has negligible rotational inertia and negligible friction, and the T-shaped apparatus rotates with negligible friction. The system is released from rest. As the block accelerates downward, it pulls the string, which causes the apparatus to start rotating. Students in a physics lab first wish to determine the value of the block's constant downward acceleration once it is released from rest by observing it fall. (a) Derive an equation for the acceleration of the block in terms of quantities that can be obtained from measurements made using only a meterstick and a stopwatch. = (b) Design an experimental procedure the students could use to collect the data needed to determine the block's linear acceleration a. In the table at left below, list the quantities that would be measured in your experiment using the meterstick and the stopwatch. Define a symbol to represent each quantity. In the space to the right of and below the table, describe the overall procedure. Provide enough detail so that another student could replicate the experiment, including any steps necessary to reduce experimental uncertainty. As needed, use the symbols defined in the table. If needed, you may include a simple diagram of the setup with your procedure. AP Physics 1 Page 1 of 4