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A child (40 kilogram) stands on the edge of a stationary merry-go-round (uniform disk of radius 1.2 meter and mass 50 kilogram). The child jumps off at 1 m/s with respect to the ground in the direction tangential to the edge. Obtain the angular speed of merry- go-round after jump. Suppose the friction on the axle of the merry-go-round is very small.
a 150g block on a frictionless table is firmly attached to one end of a spring with k 30nm . the other end of the
A piano wire with mass 2.65g and length 79.0cm is stretched with a tension of 34.0N. Calculate the average power carried by the wave
Use work and energy to calculate the stopping force on an egg ( we will model it as an spherical object) that is dropped form a height of 2m
A beam of unpolarized light shines on a stack of five ideal polarizers, Find the angle between the axes of each pair of adjacent polarizers
an unevenly weighted baton cylindrical in shape consists of two sections a denser lower section and a less dense upper
q1. a crate of 31.9- tools rests on a horizontal floor. you exert a gradually increasing horizontal push on it and
In a football game, a receiver is standing still, having justcaught a pass. Before he can move, a tackler, running at a velocityof +3.77 m/s, grabs him. The tackler holds onto the receiver, andthe two move off together with a velocity of +1.64 m/s. T..
a rubber ball mass 0.27 kg is dropped from a height of 1.8 m onto the floor. just after bouncing from the floor the
A spring is oscillating with a frequency of 1.7Hz. 3.9 seconds after the spring is released it is -20cm from equilibrium. Find the amplitude of the spring
What is a gyroscope? Discuess the role of angular momentum in operation of a gyrosope. Provide examples of pratical applications of gyryscopes
A plane is flying southeast at 200 km/h. Suddenly, it encounters wind heading 40 degrees north of east at 35 km/h. What is the planes new velocity
The current thought about the formation of the Earth’s moon is that it is a result of a cataclysmic collision of a large body with the primitive Earth. Suppose that a body with a mass of 0.014 that of the Earth undergoes a totally inelastic collision..
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