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Each of the three helicopter rotor blades shown in the figure is 5.20 m long and has a mass of 286 kg. The rotor is rotating at 250 rev/min.
(a) 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.)
(b) What is the total kinetic energy of rotation?
A closely wound rectangular coil of 100 turns has dimensions of 20.0{\rm cm} by 50.0{\rm cm}. What is the average emf induced in the coil
An imaginary accelerator consists of colliding beams of electrons and protons, each of 2TeV total energy. What laboratory energy would be required to achieve the same center - of - mass energy if electrons collide with stationary protons?
The ultracentrifuge is an important tool for separating and analyzing proteins in biological research. If the samples are 11 cm from the axis if the rotor and the ultracentrifuge spins at 6.5×10^4 rpm, what is the magnitude of the net force on the ..
Two blocks on a frictionless table, A and B, are connected by a massless string. What is the ratio (ma/mb) of the blocks masses
A uniform, cylindrical pulley of mass M=12.2 kg and radius R=0.272 m rotates freely about a fixed horizontal axis. What is the mass of the block
Two blocks (A and B) are in contact on a horizontal frictionless surface. A 40N constant horizontal force is applied to A. The mass of A is 5.0kg and the mass of B is 20k
At the instant the current in the inductor is maximal, how much charge is on the capacitor plates, Find the maximum current in the inductor
Two metal plates are held together by two steel rivets, each of diameter 0.24cm and length 1.2cm.How much force has to be applied parallel to the plates to shear off both rivets.
A wheel turns with a constant angular acceleration of 0.640 rad/s^2, Through how many revolutions does the wheel turn in this interval
Find the speed of water emerging from the hole if the leak is 2.9 below the surface of the water
A 6650kg iceberg with density 931 {\rm kg/m}^3 is afloat in seawater with density 1030 {\rm kg/m}^3, Find the volume of water displaced by the iceberg
Find the shear strain that results if a force of magnitude 8×10^5 is applied to the top square face of the plate, parallel to the side, and a force of equal magnitude is applied in the opposite direction to bottom face of the plate.
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