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A frictionless pulley has the shape of a uniform solid disk of mass 5.00kg and radius 25.0cm . A 2.20kg stone is attached to a very light wire that is wrapped around the rim of the pulley(Figure 1) , and the stone is released from rest.
As it falls down, the wire unwinds without stretching or slipping, causing the pulley to rotate. A.
How far must the stone fall so that the pulley has 7.50J of kinetic energy?
An extended object consists of two point masses, m1 and m2, connected via a rigid massless rod of length L. The object is rotating at a constant angular velocity about an axis perpendicular to the page through the midpoint of the rod. Two time-varyin..
Your friend's 15.2g graduation tassel hangs on a string fromhis rearview mirror. When he accelerates from a stoplight, thetassel deflects backward toward the rear of the car at an angle6.68 degrees relative to the vertical.
A charge of -2.450?C is located at (2.650m , 4.502m ), and a charge of 1.745?C is located at (-2.796m , 0). Find the electric potential at the origin
A fly sits on a potter's wheel .30 m from its axle. The wheel's rotational speed decreases from 4.0 rad/s to 2.0 rad/s in 5.0 s. Determine the wheel's average rotational acceleration
In an oscillating LC circuit, 75% of the total energy is stored in the magnetic field of the inductor at a certain time. In terms of Qmax, the maximum charge on the capacitor,
Amy is sitting on top of a building 50m high She throws ball with initial velocity of 10m/s upward at angle of 30 degrees to horizontal. g= 10m/s^2, Where does the ball strike the ground
A winch capable of pulling 250 lb must pull a 2800 lb load up a ramp of height 5.5 ft. Find the length of the shortest ramp for this job
A 8.9 Ω resistor and a6.5 Ω resistor are connected inseries with a power supply. The voltage drop across the 6.5 Ω resistor is measured to be10 V. Find the voltage output of the power supply.
physics Each of the following objects has a radius of 0.173 m and a mass of 2.48 kg, and each rotates about an axis through its center, Find the magnitude of the angular momentum of each object
a point charge q = +87.1 micro coulombs is held fixed at the origin. A second charge, with mass m = 0.0576 kg and charge q = +3.5 micro coulombs, Find the electric potential energy of the system of charges
A model rocket fired vertically from the ground ascends with a vertical acceleration of 3.2 m/s2 for 5.2 s. What is the maximum altitude reached
Two long, parallel wires are separated by a distance of 3.40. The force per unit length that each wire exerts on the other is 3.20×10-5, and the wires repel each other. The current in one wire is 0.6690.
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