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The figure below shows a thin rod, of length L = 1.9m and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball is attached to the other end. The rod is pulled aside an angle = 20° from the vertical and released.
a.)Using geometry, find a general equation which relates "h" to L and ?, where "h" is the vertical height of the pendulum ball, as measured above the bottom of the swing.
b.) Use your equation to find the initial height of the ball.
c.) What will be the speed of the ball at the lowest point of the swing?
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The rate of rotation of the smooth-walled tub is chosen so that a small piece of cloth will lose contact with the tub when the cloth is at an angle of ? = 73.0° above the horizontal. If the radius of the tub is r = 0.455 m, what rate of revolution..
To help prevent frost damage, 4.20 kg of 0°C water is sprayed onto a fruit tree. How much heat will be released by the water as it freezes
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