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What is the rotational inertia of the rotor assembly about the axis of rotation? (Each blade can be considered to be a thin rod rotated about one end.)
Does a centripetal force that acts on an object rotating in a circular path do work on an object?
An angular momentum system is prepared in the state
A 38-mH inductor stores 4.0 x 10^-5 J when carrying a dc current. What is the magnitude of that current?
Suppose the ring rotates once every 4.70s. If a rider's mass is 52.0kg, with how much force does the ring push on her at the top of the ride?
Let p, f, z be the cylindrical coordinates of a spinless particle (x = p cos f, y = p sinf; p = 0, 0 =f < 2?). Assume that the potential energy of this particle
A spring scale on a rotating platform indicates that the horizontal force on a 0.452 kg mass is 1.34N when the mass is 2.37m from the axis of rotation.
A helicopter blade has an angular speed of 6.50 rev/s and an angular acceleration of 1.30 rev/s^2.
Calculate the moment of inertia tensor for a solid hemisphere for rotation about its center of mass.
The cart wheels are in the corners, it is rated to carry 3600 pounds and weights 114 pounds. If the compressor is placed centered on the cart .
A star rotates about its axis through a diameter once in 50 days. At the end of its life the star collapses to one hundredth of its orginal diameter.
Assume that the spacecraft can be approximated as a long, uniform thin rod, ignoring the irregularities in shape at the nose and the tail.
At what radial “distance” v from the origin of velocity space is the “density” of representative points one-half as great as at the origin.
If instead the axle must give the buckets an upward acceleration of 0.400m/s^2, what should the angular acceleration of the axle be?
A uniform thin solid door has height 2.20 m, width 0.870 m, and mass 23.0 kg. Find its moment of inertia for rotation on its hinges.
What is the magnitude and direction of the centripetal acceleration due to the earth's rotation at a location near Kansas City at 38 degrees latitude?
Does the mirror equation (p^-1 + d^-1 = 2R^-1 = f^1) apply to a plane mirror? What relationship between p and d does it imply?
A uniform cylinder of radius 10 cm and mass 20 kg is mounted so as to rotate freely about a horizontal axis that is parallel.
Temperature plays a role in determining the relevance of electronic, vibrational, and rotational spectral lines in room-temperature biomedical optics.
A disc of Radius a lies on x-y plane with the z axis through its center. Surface Charge of uniform density P (row ) lies on the disk.
A hoop of mass M and radius 1? rolls without slipping along a track which has the shape of a circle with radius 4R. It is subject to gravity.
If we define the period of the fan as the time it takes for the fan to rotate and appear to return to its "starting position", what is the frequency.
At t=3s, a point on the rim of a .2m radius wheel has a tangential speed of 50m/s as the wheel slows down with a tangential acceleration of constant magnitude.
The condition that must exist when a body is at rest is that the magnitude of the resultant of forces acting on the body must be
A fountain has jets that squirt water in all directions at a speed of 16 ft/sec from a central point as shown.