Astronauts often undergo special training in which they are subjected to extremely high centripetal accelerations. One device has a radius of 15 m and can accelerate a person at 98 m/s2. What is the speed of the astronaut in this device?

Respuesta :

The centripetal acceleration of an object is given by the relation,

[tex]Ac =V^2/R[/tex]

where Ac = centripetal acceleration = [tex]98 m/s^2[/tex]

R = radius of rotation = 15 m

V = speed of astronaut

Hence, [tex]\frac{V^2}{15} =98[/tex]

solving this we get, V = 38.34 m/s

Answer: The speed of the astronaut in this device 38.34 m/s.

Explanation:

Radius of the device ,r = 15 m

Acceleration of the device = [tex] =a_c=98m/s^2[/tex]

Velocity of the astronaut in a device ,v = ?

[tex]a_c=\frac{v^2}{r}[/tex]

[tex]v^2=98 m/s^2\times 15 m[/tex]

[tex]v=38.34 m/s[/tex]

Hence,the speed of the astronaut in this device 38.34 m/s.