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Problem: A child standing on the edge of a merry-go-round moves quickly to the center.
Part A- What happens to the rotational speed of the merry-go-round? Why?
For some reason I keep getting it wrong I don't know if it's a calculation error. Please show your works so I can see what I'm doing wrong please help!
In a ballistics test at the police department, Officer Rios fires a 6.0gram bullet at 350m/s in to a container that stops it in 1.8milliseconds. What is the average force acting on the bullet
A vertical solid steel post 24.0cm in diameter and 2.50m long is required to support a load of 8100 kg. You may ignore the weight of the post. What is the strain in the post when the load is applied
During a walk on the Moon, an astronaunt accidentally drops his camara over a 20.0m cliff. It leaves his hands with zero speed, and after 2.0s it has attained a velocity of 3.3 m/s downward. How far has the camera fallen after 4.0 s?
A child holds a candy bar 10.0 cm in front of a convex mirrorand notices that the image is only one-half the size of the candybar. What is the radius of curvature of the mirror?
In an old-fashioned amusement park ride, passengers stand insidea 4.6 meter diameter hollow steel cylinder with their backs against the wall. Obtain the minimum angular speed for which the ride is safe
A 90.0 kg fullback running east with a speed of 5.00 m/s is tackled by a 95.0 kg opponent running north with a speed of 3.00 m/s. Calculate the speed of the two players just after the tackle
A solid, uniform sphere of mass 2.0 kg and radius 1.7 m rolls without slipping down an inclined plane of height 1.7 m. What is the angular velocity of the sphere
A spring of spring constant k = 340 Nm-1 is used to launch a 1.5-kg block along a horizontal surface by compressing the spring by a distance of 18 cm. how far does the block slide
What is the total mass of the earth's atmosphere? (the radius of the earth is 6.37X10^6m. and atmosphere pressure at the surface is 1.013X10^6N/m^2)
A machine part rotates at an angular speed of 0.44 rad/s; its speed is then increased to 1.5 rad/s at an angular acceleration of 0.78 rad/s2. Find the angle through which the part rotates
A diver makes 0.50 revolutions on the way from a 9.9-m-high platform to the water. find the diver's average angular velocity during a dive
A penny has a mass of about 10 g. The penny falls from a height of 169 meter and, unfortunately lands right on the head of a man standing directly below it. Find the average force exerted by the penny on the head
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