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A uniform cylindrical turntable of radius 2.00 m and mass 26.8 kg rotates counterclockwise in a horizontal plane with an initial angular speed of 4? rad/s. The fixed turntable bearing is frictionless. A lump of clay of mass 2.41 kg and negligible size is dropped onto the turntable from a small distance above it and immediately sticks to the turntable at a point 1.90 m to the east of the axis.
(a) Find the final angular speed of the clay and turntable.
(b) Is mechanical energy of the turntable-clay system constant in this process?
(c) Is momentum of the system constant in this process?
A 23 bullet traveling 240 penetrates a 4 block of wood and emerges going 170. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
A 2 cm long section of the patellar ligament stretches to 2.002 cm when it is subjected to a tensile force of 10,000 N. What is the strain in this segment of ligament
Block A weighs 19.9 lb and is moving toward the left with a velocity of 4 ft/s just before it is struck by the bullet B from a caliber 50 machine gun. The coefficient of kinetic friction between A and the plane is 0.25. The bullet weighs 0.10 lb a..
a 330 kg piano is pushed 3.6 m up a 28 degree incline by three men starting at rest at the bottom of the hill and ending at 41 cm/s. What is the net work done on the piano
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An ideal spring with a spring constant of 16 N/m is suspended vertically. What is the extension of the spring when the speed is a maximum
It is observed that the size of a real image formed by aconcave mirror is four times the sizeof the object when the object is 34.5cm in front of the mirror. What is the radius of curvature of this mirror
A block is attached to a ceiling by a spring of force constant k. When pulled down and released, what is the force constant k of the spring
The speed of a bobsled is increasing because it has an accelerationof 2.4m/s^2. At a given instant in time, the forces resistingthe motion, including kinetic friction and air resistance, total450 N. The mass of the bobsled and its riders is 270kg. Wh..
You fire a gun horizontally that is 25m off the ground and the bullet goes at 200m/s. What is the time it takes for the bullet to hit ground, how far down range does bullet travel, and what is the resultant velocity (in m/s) and final angle.
We have studied four different laws authored by Sir Isaac Newton. For each of the following, indicate which law is best for the task described. Calculating the force exerted on a satellite by the Earth
The charge on the opposite side to the point is -4 nC and the charges on the adjacent sides of the square are +4 nC. Find the potential at the uncharged corner
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