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Q. You make a slingshot from a 50cm long piece of rope in which you put a m=50g stone and you swing this rope in a circle over your head at the height of 2m above the ground at a rate of one revolution every 0.2seconds. When the stone leaves the sling it makes an angle of 25degrees above the horizontal. Suppose you are on level ground.
1) With what velocity does the stone leave the sling?2) How long is the stone in the air?3) What is the maximum height H reached by stone?4) What horizontal distance D does the stone travel before hitting the ground?5) Create a graph of x-position, x-velocity, and x-acceleration versus time and a graph of y-position, y-velocity, and y-acceleration versus time
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To test the deflection of the uniform 200-lb beam the 121-lb boy exerts a pull of 36 lb on the rope rigged. Calculate the force supported by the pin at the hinge O.
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A 0.449 kg ice puck, moving east with a speed of 2.91 m/s, has the head-on collision with a 0.846 kg puck initially at rest. Assume a perfectly elastic collision, what will be the speed and direction of each object after the collision.
A monochromatic beam of light is absorbed by a collection of ground-state hydrogen atoms in such a way that three different wave-lengths are observed while the hydrogen relaxes back to the ground state. What is the wavelength of the incident beam.
You travel from "point" Columbia to St. Louis in a car moving at a constant speed of 60 km/h. Then you travel back from St. Louis to Columbia the same distance moving at a constant speed of 120 km/h.
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