7 A 2 5p A Mass Mo Is Attached To A Spring And Hung Vertically The Mass Is Raised A Short Distance In The Vertical 1 (66.92 KiB) Viewed 54 times
7 A 2 5p A Mass Mo Is Attached To A Spring And Hung Vertically The Mass Is Raised A Short Distance In The Vertical 2 (47.11 KiB) Viewed 54 times
7. (a) (2.5p) A mass mo is attached to a spring and hung vertically. The mass is raised a short distance in the vertical direction and released. The mass oscillates with a frequency fo. If the mass is replaced with a mass nine times as large, and the experiment was repeated, what would be the frequency f of the oscillations in terms of fo? Show your work. (b) (2.5p) A m = 500.0 g (grams) mass suspended from a spring oscillates with a period of T1 = 1.00 s. How much mass must be ADDED to the object to change the period to T2 = 2.00 s? Show your work. A numerical value is required for credit.
5. (2p) Fire hoses used in major structure fires have inside diameters of 2.500 in (1 in = 2.54 cm). The nozzle of the fire hose have an inside diameter of 1.200 in. When firefighters are fighting a fire 2022.007 cm above the ground, the pressure in the nozzle is less than at ground level. When measured, the gauge pressure in the nozzle is 0.000 Pa. What is the value of the water pressure as it emerges into the air from the nozzle? Explain your answer.
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