Rotational Kinematics
The wheel shown below has eight equally spaced spokes and a radius of 30 cm. It is mounted on a fixed axle and is spinning at 2.5 rev/sec. You want to shoot a 20 cm long arrow without hitting any of the spokes. Assume the arrow and the spokes are very thin.
B. Does it matter where between the axle and the rim of the wheel you aim? If so what is the best location?
SOLUTION MISSING: Unfortunately the author of this youtube video removed their content. You may be able to find a similar problem by checking the other problems in this subject. If you want to contribute, leave a comment with the link to your solution.Related Problems
A flywheel turns through 40 rev as it slows from an angular speed of 1.5 rad/s to stop.
A. Assuming constant angular acceleration find the time for it to come to rest.
B. What is its angular acceleration?
C. How much time is required for it to complete its first 20 of the 40 revolutions?
A massless string is wrapped around a disk of rotational inertia I = . The disk falls and spins as it falls, unraveling the rope. Determine the tension in the string and the acceleration of the disk.
A solid brass sphere of mass m and radius r << R rolls along a track when released from rest along the straight section. The circular loop has a radius R.
B. Assume the sphere is released at height h = 6.0 R, what are the magnitude and direction of the horizontal force competent acting on the sphere at point Q?
A pulley of radius R1and rotational inertia I1is mounted on an axle with negligible friction. A light cord passing over the pulley has two blocks of mass mattached to either end, as shown below. Assume that the cord does not slip on the pulley. Determine the answers to parts (A) and (B) in terms of m, R1, I1, and fundamental constants.
