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A 40 kg child stands on the edge of a rotating merry-go-round with a radius of 2m. The moment of inertia of the merry-go-round is 200 kg-m^2. The merry-go-round is rotating counterclockwise with an angular speed of 0.5 rad/sec. The child catches a ball of mass 2.0 kg. Thrown at her. The velocity of the ball just before it is caught is 15 m/sec. The ball makes an angle with 60 degrees with the tangent outer edge of the merry-go-round.
a. What is the angular velocity of the merry-go-round just after the ball is caught?
b. What is the energy loss during this process?
c. If the catch takes 0.4 seconds, find the average torque on the merry-go-round during the catch.
After a shipwreck, a solid steel spoon lies at the bottom of the ocean, 8.00km below the surface. Find the fractional volume change in the spoon due to compression forces
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approximately what is the mass of an object whose weight equals the force from part "b"? can you lift such a mass.
A stone is projected at a cliff of height h with an initial speed of 45.0 m/s directed at an angle θ0 = 66.0° above the horizontal. The stone strikes at A, 5.37 s after launching. Find out (a) height h of the cliff, (b) speed of the stone just before..
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