Question

3. (3 points) Suppose you are fishing, and you cast out 30 feet of line (measured from the tip of the rod to the sinker). When the sinker hits the bottom of the river, it makes a 130° angle with your fishing pole (line taught and rod level). If the tip of your rod is 5 feet above the surface of the water, how far underwater is your sinker? Refer to the picture below. obnost 2100 zobieltrobomo Smood so od loqot odnosti ibustest loot to OD 8 oC eoque nos elab bmon body built wonder 1300 Sinker 4. A mass on a spring oscillates in a damped harmonic motion. t seconds after the mass is released, it's position (in centimeters) above equilibrium is given by 8(t) = 2e-4 cos(4t). (a) (1.5 points) Sketch a graph of y = 8(t). Identify the quasi-period of the oscillation. (b) (0.5 points) At what time does the spring pass the equilibrium position for the first time? (c) (1 point) How many centimeters above or below equilibrium position is the mass 1 second after it is released? Round your answer to 8 decimal places.

If the tip of your rod is 5 feet above the surface of the water, how far underwater is the sinker?

Answer 1

3.) LAOS= 130-90=40 In A AOS B OA = os los 40 30 Los you = 22.98 feet 12. OB = 5 feet BA = 22.98-5 17.98 feet This is the required distance !