PHYS 101 Midterm: PHYS 101 Midterm 2b 2002

• School: McGill University
• Department: Physics
• Course: PHYS 101
• Professor: All

Document Summary

For questions 2 and 3, please show complete solutions and explain your reasoning, stating any principles that you have used. For each of the following five questions, please circle one answer only. (i) inclined plane. She brings her arms in close to her body and her moment of inertia decreases by 1/2. By what factor does her angular speed change: 8, 4. A mass of 375 g hangs from one end of a string that goes over a pulley with a moment of inertia of 0. 0125 kg m2 and a radius of 15. 0 cm. A mass of 700 g hangs from the other end. A bat emits a sound at a frequency of 35. 0 khz as it approaches a wall. 3(4 marks). detects beats with a frequency of 972 hz between the sound it emits and the echo bouncing from the wall.