1 of 10 What linear speed would an astronaut have to spin in order to experience...
Astronauts are spun in a device called a centrifuge as a physical test before they fly in space. With what linear speed would an astronaut need to be spinning in order to experience an acceleration of 3 g's at a radius of 10.0 m? (1 g = 9.80 m/s^22)
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 9 m and, in starting, rotates according to θ = 0.30t2, where t is in seconds and θ is in radians. (a) When t = 11.0 s, what is the magnitude of the astronaut's angular velocity? rad/s (b) When t = 11.0 s, what is the magnitude of the astronaut's linear speed? m/s (c) When t = 11.0 s, what is the magnitude of the astronaut's...
A 75.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 20.0 m) and spun at a constant angular velocity of 15.0 rpm (revolutions per minute). He is then slowed and brought to a stop in 2.0 minutes. a. Find the magnitude and direction of the centripetal acceleration and force when he is spinning at constant angular velocity. b. How many g’s is the astronaut experiencing when moving at...
A rotating object has a linear speed of 1.7 m/s. It undergoes a centripetal acceleration of 4.5m/s2. What is the radius of the mass's circular motion?
A motorcycle, which has an initial linear speed of 8.4 m/s, decelerates to a speed of 1.9 m/s in 5.8 s. Each wheel has a radius of 0.62 m and is rotating in a counterclockwise (positive) directions. What is (a) the constant angular acceleration (in rad/s2) and (b) the angular displacement (in rad) of each wheel?
An astronaut weighs 850 N on the Earth’s surface. When the astronaut lands on Planet X, she weighs 190 N. To the nearest tenth of a m/s2, what is the acceleration of gravity on Planet X? (hint: first find her mass!) An elevator car loaded with two passengers has a mass of 1200 kg. What tension must be applied by the elevator cable to give the car an acceleration of 1 m/s2 upward? Round your answer to the nearest newton....
17.) A motorcycle accelerates uniformly from rest and reaches a linear speed of 21.6 m/s in a time of 9.72 s. The radius of each tire is 0.298 m. What is the magnitude of the angular acceleration of each tire? rad/s2
3. The Disney "Flying Dumbo" ride has big-ear elephants that have a speed of 2.4 m/s , and a radius of 3.5 m. What acceleration do the riders require to stay in their seats, and in what direction? 4. As in problem 3, the Disney "Flying Dumbo" ride has big-ear elephants that have a speed of 2.4 m/s , and a radius of 3.5 m. Once the ride is over, the elephants are decelerated at 1 m/s2. If the riders...
7. What would the speed of a proton (mass = 1.67 x 10-30 g) have to be in order to have the same wavelength as an electron (mass = 9.11 x 10-34 g) travelling at a speed of 2.74 x 10 m/s? Ansam m/s 8. What wavelength (nm) would a 75.0 kg person have running at a speed of 1 mile in 6 minutes? Anshasassassow
Astronauts use a centrifuge to simulate acceleration of a rocket launch. The centrifuge takes 20.0 seconds to speed up from rest to its top speed of 1 rotation every 1.10 seconds. the astronaut is strapped into a seat 6.30 m from the axis. what is the astronauts tangential acceleration during the first 20.0 seconds? How many g's of acceleration does the astronaut experience when the device is rotating at top speed? Each 9.80 m/s2 of acceleration is 1 g