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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?
An airplane is flying through a thundercloud at a height of 2400 m. (Flying at this height is very dangerous because of updrafts, turbulence, and the possibility of electric discharge.)
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an ideal gas expands isothermally,perfoming 5.57x10^3 j of work in the process. calculate the heat absorbed during this expansion
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Typical large values for electric and magnetic elds attained in laboratories are about 1:0104 V/m and 2.0 T. Determine the energy density for each eld
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At LHC, what force is curving the trajectory of accelerating hadrons, forcing them to pass trillions of times around the tunnel track, before they are collided
A rock is tossed straight up with a velocity of 14 m/s When it returns, it falls into a hole 10m deep.
Two masses, M=3.8kg and m=2kg, are hung over a massless, frictionless pulley. What is the downward acceleration of mass M
A 1000kg car moving 40m/s skids to a stop. During the skid, the only force is the frictional force between the tires and the road, which is 6000N. find the distance the car moves before coming to a stop
A hurricane wind blows across a 7.10 15.1 flat roof at a speed of 130. How much force is exerted on the roof
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