contestada

Starting from rest, a 5.00 kg steel sphere rolls down a frictionless ramp with a height of 4.00 m. What is the sphere's speed when it reaches the bottom of the ramp? (Use 9.80 for the value of "g.")

Respuesta :

boffeemadrid

Answer:

8.85437 m/s

Explanation:

m = Mass of sphere = 5 kg

h = Vertical height = 4 m

g = Acceleration due to gravity = 9.80 m/s²

Applying conservation of energy we get

[tex]\dfrac{1}{2}mv^2=mgh[/tex]

[tex]\\\Rightarrow v=\sqrt{2gh}[/tex]

[tex]\\\Rightarrow v=\sqrt{2\times 9.8\times 4}[/tex]

[tex]\\\Rightarrow v=8.85437\ m/s[/tex]

The sphere's speed when it reaches the bottom of the ramp is 8.85437 m/s

Otras preguntas