Скачать или смотреть 2021 AP Physics 1 Free Response Q # 4 | Easy Explained, Work Shown, High-Score Method

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In this video, I explain AP Physics 1 Free Response Question [2021] Question [4] in a simple, clear, and student-friendly way. This lesson includes step-by-step reasoning, exam-style solving, and easy-to-understand explanations to help you score maximum points on the AP Physics 1 exam.

4. (7 points, suggested time 13 minutes)
A cylinder of mass mo is placed at the top of an incline of length Lo and height Ho, as shown above, and released from rest. The cylinder rolls without slipping down the incline and then continues rolling along a horizontal surface.
(a) On the grid below, sketch a graph that represents the total kinetic energy of the cylinder as a function of the distance traveled by the cylinder as it rolls down the incline and continues to roll across the horizontal surface.
The cylinder is again placed at the top of the incline. A block, also of mass mo, is placed at the top of a separate rough incline of length Lo and height Ho, as shown above. When the cylinder and block are released at the same instant, the cylinder begins to roll without slipping while the block begins to accelerate uniformly. The cylinder and the block reach the bottoms of their respective inclines with the same translational speed.
(b) In terms of energy, explain why the two objects reach the bottom of their respective inclines with the same translational speed. Provide your answer in a clear, coherent paragraph-length response that may also contain figures and/or equations.




My goal is to help students understand physics concepts without stress.
English is not my native language, so please excuse any pronunciation mistakes or speaking errors , thank you for understanding! 😊

This video is perfect for:
Students preparing for AP Physics 1 FRQs
Quick revision before exams
Learning how to show proper work and reasoning
Understanding scoring guidelines and common mistakes
Practicing physics problem-solving the right way

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