EXAM 3.5: WAVES

BASICOT POST DO NOT ASSIST DO NOT POST DO NOT ASSIST DO NOT POST DO NOT ASSIST In this assignment, waves travel along a string connected to an oscillator. The other end of the string runs over a pulley and suspends a hanging cylinder at rest. Assume that waves aren't reflected back along the string from the pulley, so that the waves only travel from left to right in the diagram below. The lack of wave reflection also means that no standing waves are possible, and play no role in this assignment. NOT POST DO NOT ASSIST DO NOT POST DO NOT ASE oscillator DO NOT ASSIST pulley DO NOT POST DO NOT ASS DO NOT ASSIST DO NOT POST DO NOT ASS DO NOT ASSIST DO NOT POST DO NOT ASS DO NOT ASSIST DO NOT POST DO NOT ASS M DO NOT ASSIST DO NOT POST DO NOT ASS DO NOT ASSIST (1) RNG Analysis of high-speed video of a red dot painted on the string shows that 300-700 wave peaks pass through the dot in 2.50 s, and that the the separation between a peak and the next valley is 4-8 cm. Calculate the frequency, wavelength and speed of the waves traveling along the string. DO NOT POST DO NOT ASSIST (2) RNG The cylinder hanging from the end of the string has a mass M= 100-300g. Calculate the string's linear density in grams per meter. 1 ASSIST DO NOT POST DO NOT ASSIST DO NOT POST DO NOT ASSIST (3) RNG The string can endure a tension of at most 20-50 N before snapping. Calculate the maximum possible wave speed for this string. (4) The tension is raised as high as possible without snapping the string, and the oscillator is kept at the ASSIST frequency calculated in #1. Calculate the maximum number of wave peaks that could appear in a photo of a 1.00-meter segment of the string. Show work and briefly explain. (5) Pretending that the string is infinitely strong and can't be snapped, calculate the tension you'd have to apply to raise the string's wave speed to c = 3.00E8 m/s, the speed of light. SIST DO NOT POST DO NOT ASSIST DO NOT POST DO NOT ASSIST DO NOT POST DO NOT ASSIST DO NOT POST DO NOT ASSIST The calculations in parts of #1 and #4 don't correspond directly to any of the eqns on the PHYS 1200 Equation Sheet, and instead are based on the physical definitions of frequency and wavelength. Meaning that if you understand what frequency and wavelength are, you can complete these calculations without needing any SSIST special equations from the equation sheet. Just do your best to write out the work in a way that can be followed