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Q. The flywheel of an engine has a moment of inertia 2.40 kg m^2 about its rotation axis. What constant torque is required to bring it up to an angular speed of 400 rev/min in a time of 8.50 s, starting from rest? What is its final kinetic energy?
Q. A sanding disk with rotational inertia 8.1 x 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of magnitude 20 N·m about the central axis of the disk. About that axis and with torque applied for 29 ms, what is the magnitude of the (a) angular momentum and (b) angular velocity of the disk?
Two forces FA and FB are applied to an object whose mass is 5.43 kg. The larger force is FA. When both forces point due east, the object's acceleration has the magnitude of 1.40 m/s2. Though, as FA points due east and FB points due west, the accelera..
W hat is balls initial speed
What is the least speed the block must have at the top of the loop to make it around the loop-the-loop without leaving the track
A small object with a mass of 333 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of the parallel-plate capacitor. The plates are separated by 2cm.
Two bicycle tires are set rolling with the equivalent initial speed of 5.0 m/s along a long, straight road, and distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 {rm psi} and goes the dist..
A thin, light wire is wrapped around the rim of a wheel. The wheel rotates without friction about a stationary horizontal axis that passes through the center of the wheel. The wheel is a uniform disk with radius 0.28. An object of mass 4.0 is suspend..
A 25 g of copper pellets are removed from a 300 C oven and immediately dropped into 120 mL of water at 18 C in an insulated cup. What will the new water temperature be.
What is an average velocity of the rock
Find the value of Q that would make the thickness of the equivalent body 0.1 times its length (i.e the value of y at the dividing streamline at x=0 is 1/10 of the x coordinate at the aft stagnation point.).
Calculate the period T and the tension in the string F as a function of the angle. Compute the moment of inertia of this system for an axis that passes through the combined center of mass and is perpendicular to the plane of the rings.
Find the total work done on the car
What is the magnitude of the force applied throughout this time? What is the direction of the force applied throughout this time?
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