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A disk-shaped merry-go-round of radius 2.73 meter and mass 165 kilogram rotates freely with an angular speed of 0.621 rev/s. A 55.4 kilogram person running tangential to the rim of the merry-go-round at 3.31 m/s jumps onto its rim and holds on. Before jumping on the merry-go-round, the person was moving in the same direction as the merry-go-round's rim.
Estimate what the final angular speed of the merry-go-round?
Consider two masses that hang from an overhead beam. The first mass of 62.9 kg is attached to the beam using an ideal rope. Find the tension in the lower rope
a contestant in a winter games event pushes a 31 kg block of ice across a frozen lake. the coefficient of static friction is 0.1, Calculate minimum Force he must exert to get moving back
An electric motor is plugged into a standard 120V electrical service. At startup a current of 23.4A is measured. what is the operating current with the new resistor added
If the speed of the aircraft is 684 km/h and the radius of the circle is2.0 {\rm km}, calculate the normal force exerted on seat with the pilot at the bottom of the loop. Express your answer in terms of the pilot's weight W.
A golfer can hit a golf ball a horizontal distance of over 300 m on a good drive. Find what maximum height will a 326.7 m drive reach
Two small nonconducting spheres have a total charge of 93.1 ?C. When placed 1.01 m apart, the force each exerts on the other is 11.5 N and is attractive. What is the charge on each?
Two converging lenses having focal lengths of 10.0 cm and 20.0 cm are placed 50 cm apart, as shown in the figure below. The final image is to be located between the lenses, at the position indicated.
A fire helicopter carries a 649 kg bucket of water at the end of a 18.7 m long cable. Flying back from a fire at a constant speed of 44.2 m/s, Determine the force of air resistance on the bucket
A 2.0 kg bike wheel, which can be taken as a hoop witha radius of 0.40 m and a 0.50 kg disk with a radius of 0.15 m are attached to a common axle and are initially rotating together at aconstant angular velocity of 2.0 rev/s
The main components of a thermal/steam power plant are: Pump, boiler, steam turbine, condenser and generator. which one operates at higher temperature and pressure
A 4.7 kg block moving at 4.7 m/s makes a head-on elastic collision with a stationary block of mass 3.9 kg. Find the kinetic energy of the system after the collision
A 1150 W carbon-dioxide laser emits light with a wavelength of 10 µm into a 3.0-mm-diameter laser beam. What force does the laser beam exert on a completely absorbing target
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