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A 100.0 kg bungee jumper steps off a bridge with a light bungee cord tied to her and to the bridge. The unstretched length of the cord is 13.0 m. She reaches the bottom of her motion 38.0 m below the bridge before bouncing back. Her motion can be separated into an 13.0 m free-fall and a 25.0 m section of simple harmonic oscillation. (a) For what time interval is she in free-fall? 1 s (b) Use the principle of conservation of energy to find the spring constant of the bungee cord. 2 Your response differs from the correct answer by orders of magnitude. N/m (c) What is the location of the equilibrium point where the spring force balances the gravitational force acting on the jumper? Note that this point is taken as the origin in our mathematical description of simple harmonic oscillation. 3 m below the bridge (d) What is the angular frequency of the oscillation? 4 rad/s (e) What time interval is required for the cord to stretch by 25.0 m? 5 s (f) What is the total time interval for the entire 38.0 m drop? 6 s
An AC generator with a frequency of 120 Hz and an rms voltage of 20 volt is connected in series with 12 k(omega) resistor, What are the rms and maximum current in this circuit
Two blocks, masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find the acceleration of each block
To test the effects of high acceleration on the human body, NASA has constructed a large centrifuge at the Manned Spacecraft Center in Houston. what must be the speed of the capsule
A train moving with constant velocity travels 190 north in 14s and an undetermined distance to the west. How far west has the train traveled
A solid cylinder with mass and radius, rotating with angular speed about an axis throughout its center, is set on the horizontal surface for which the kinetic friction coefficient is.
A bullet emerges from the muzzle of agun with a speed of 300m/s. calculate the time for the bullet to travel the lenght of the barrel, assuming the force is zero at the end of the barrel
A 1000 kg rocket carrying 4000kg of fuel is travelling at 200 x m/s It burns and ejects 100kg of exhaust with a relative velocity of ?400x m/s , What is the final velocity of the rocket after this
two point charges are on the y axis. A 3.50 uc charge is located at y=1.1cm, and a -2.16 uc charge at y=-1.4cm. find the total electric potential at origin in volts
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How many joules of kinetic energy does a 750 automobile traveling at a typical highway speed of 65 have.
Two cylinders, made from the same material and having the same length, have radii r1 and r2 with r1 > r2. Find the final angular velocity of the smaller cylinder
Two 10 cm long thin glass rods uniformly charged to + 10;{rm nC} are placed side by side, 4cm apart. What are the electric field strengths E_1, E_2, and E_3 at distances 1.0 cm, 2cm, and 3cm to the right of the rod on the left, along line connecti..
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