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Astronauts in training are subjected to extreme acceleration forces by the centripetal forces in a giant centrifuge. The radius of the centrifuge is approximately 5 m.
a) Calculate the approximate centripetal force on an astronaut of mass 80 kg if the centrifuge rotates once every 2 s.
b) Approximately how many times greater than the astronauts weight is this force?
Astronauts in training are subjected to extreme acceleration forces by the centripetal forces in a giant centrifuge. The radius of the centrifuge is approximately 5 m.
a) Calculate the approximate centripetal force on an astronaut of mass 80 kg if the centrifuge rotates once every 2 s.
b) Approximately how many times greater than the astronauts
weight is this force?
a centrifugal pump operating under steady flow conditions delivers, 3,050 kg/min of water from initial pressure of 83, 400 Pa to final pressure of 300,000 Pa. the diameter of the inlet pipe to the pump is 16cm and the diameter of discharge pipe is 10.16cm. what is the work
Auston Mattlew, when not playing hockey, i9s also a sharpshooter and aforensic expert. On days when he doent play hockey, he practices his shooting skills by firing a bullet. auston matthew notices the pendulum moved to 10 cm above the original position ( please see the picture for more details )
The spring oscillates to the other end. The amplitude is 3.5m, k = 1.2, and angular frequency is = 4.3 . Solve the frequency, wavelength, wave speed, period, wave number, and direction.
If the sound intensity 4.0 m from a point sound source is 1.0 × 10–⁶ Wm², what will be the sound intensity at each of the following distances from the source:
A. 1.0 m?
B. 2.0 m?
In the figure, block 1 of mass m1 slides from rest along a frictionless ramp from height h = 2.3 m and then collides with stationary block 2, which has mass m2 = 4m1. After the collision, block 2 slides into a region where the coefficient of kinetic friction μk is 0.6 and comes to a stop in distance d within that region. What is the value of distance d if the collision is (a) elastic and (b) completely inelastic?
The tolerance is in the 2nd significant digit.
In the figure, a 4.4 kg block slides along a track from one level to a higher level after passing through an intermediate valley. The track is frictionless until the block reaches the higher level. There a frictional force stops the block in a distance d. The block's initial speed is v0 = 7.3 m/s, the height difference is h = 1.1 m, and μk= 0.632. Find d.
The tolerance is +-1 in the 3rd significant digit
In the figure, two blocks are connected over a pulley. The mass of block A is 11.0 kg and the coefficient of kinetic friction between A and the incline is 0.300. Angle θ of the incline is 43.0°. Block A slides down the incline at constant speed. What is the mass of block B?
The tolerance is +-1 in the 3rd significant digit.
A soccer ball is kicked from the ground with an initial speed of 19.2 m/s at an upward angle of 44.7˚. A player 50.1 m away in the direction of the kick starts running to meet the ball at that instant. What must be his average speed if he is to meet the ball just before it hits the ground? Neglect air resistance.Use g=9.81 m/s2
The tolerance is +-1 in the 3rd significant digit,
