Answer:
C) The spring constant of each half will be twice the spring constant of the original long spring since it will stretch only half as much under the same tension.
Explanation:
Hooke's law states that the force needed to extend or compress a spring by a distance is proportional to that distance. If is given as:
F = ke, where F is the force applied, k is spring constant and e is the extension.
If a force f is applied to a spring with a spring constant k and by a distance stretched (x) then:
k = F / x
For half the spring, if the same force F is applied, the stretch would be half (x/2), hence the spring constant C is:
C = F / (x/2)
C = 2 (F / x) = 2 * spring constant of original spring
Answer:
A body is said to be moving with uniform speed, if it covers equal distances in equal intervals of time. ...
In the object that has, the least inertia.
Answer:
a = 0.44[m/s²]
Explanation:
Para solucionar este problema debemos de utilizar la siguiente ecuacion de la cinematica.
donde:
Vf = velocidad final = 50 [km/h]
Vo = velocidad inicial = 90 [km/h]
a = desaceleracion [m/s²]
t = tiempo = 25 [s]
Pero primero debemos convertir la velocidad de kilometros por hora a metros por segundo.
Ahora podemos reemplazar en la ecuacion:
Nota: El signo de la aceleracion se cambia a negativo, ya que el vehiculo disminuye la velocidad.