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Final Exam Review Simple Harmonic Motion Leader: Ben Course: Phys 111 Instructor: Alan Goldman Date: Supplemental Instruction Iowa State University 1. A car’s engine runs at 2700 rpm. a. What is the period and frequency of the engine? b. If you change the period to 0.0444s how many rpm’s is it doing? 2. A person rides on a mechanical bull that oscillates up and down with simple harmonic motion. The period of the bucking is 0.74 s and the amplitude is slowly increasing. Find the amplitude of the oscillations. Hint: find a way to relate the acceleration of gravity to the amplitude 3. When a 0.5 kg mass is attached to a vertical spring, the spring stretches by 15 cm. How much mass must be added or removed in order to obtain a period of 0.75 s? 4. A 2.25 g bullet embeds itself in a 1.5 kg block, which is attached to a spring of force constant 785 N/m. If the maximum compression of the spring is 5.88 cm find a. The initial speed of the bullet b. The time for the bullet-block system to come to rest