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In a large centrifuge used for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. A trainee riding in the chamber of a centrifuge rotating with a constant angular speed of 2.0 rad/s experiences a centripetal acceleration of 3.1 times the acceleration due to gravity. In a second training exercise, the centrifuge speeds up from rest with a constant angular acceleration. When the centrifuge reaches an angular speed of 2.0 rad/s, the trainee experiences a total acceleration equal to 4.4 times the acceleration due to gravity.
(a) How long is the arm of the centrifuge?
(b) What is the angular acceleration in the second training exercise?
You (height of your eyes above the water, 1.75) are standing 2.00 from the edge of a 2.50--deep swimming pool. You notice that you can barely see your cell phone, that went missing a few minutes before, on the bottom of the pool.
A uniform electric field of magnitude 445 N/C pointing in the positive x-direction acts on an electron, that is initially at rest. The electron has moved 3.10 cm.
Pulling a car from a ditch, To pull a car from a ditch, the driver ties one end of a rope to the car and the other to a tree 12.5 m away.
Consider a car undergoing these two displacements: D1 (3 km, 4 km) and D2 (4km, -3 km). how far will the car then be from its starting point
Two boxes with different masses M1 = 0.7 kg and M2 = 2.3 kg are tied together on a frictionless ramp surface, What is the tension in the rope connecting the two boxes
A 59.3-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.714, What horizontal pushing force is required to just start the crate moving
An electric motor is rated to have a maximum power output of 0.68 hp. how fast (i.e., at what speed) can it lift the crate
A car travels at a constant speed around the circular track or a radius of 2.6 km. it goes around the track once in 360 seconds.
A wave crest passes an observation point followed by a second crest. The time between crest is a period of 168.818 seconds. If the wave is traveling at a speed of 154.167 m/s, how long are the wavelengths?
Calculate the index of refraction for a piece of glass that is 3.5 cm thick if the ray inside the glassmakes an angle of 25.4 degree with respect to the normal
A square uniform raft, 20m by 20m , of mass 7100kg , is used as a ferryboat. determine the CM of the loaded ferryboat
Suppose two identical spheres are insulated: sphere A carries +3.54Q and sphere B carries -20.2Q, What is the charge on sphere A now
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