High School

A centripetal force of 215 N acts on a 1,100-kg satellite moving with a speed of 5,100 m/s in a circular orbit around a planet. What is the radius of its orbit?

Answer :

The radius of the orbit is approximately 6,536,046.51 meters. The centripetal force acting on the satellite is given by the formula:

F = (mv²)/r

where F is the force, m is the mass of the satellite, v is its velocity, and r is the radius of its orbit.

Substituting the given values, we get:

215 = (1100 x 5100²)/r

Solving for r, we get:

r = (1100 x 5100²)/215 = 6,536,046.51 meters

The centripetal force acting on a satellite is given by the equation Fc = (mv²)/r, where Fc is the centripetal force, m is the mass of the satellite, v is the velocity, and r is the radius of the orbit. Rearranging the equation to solve for r, we get r = (mv²)/Fc. Plugging in the given values, we get r = (1100 kg x (5100 m/s)^2)/215 N = 7.14 x 10⁶m. Therefore, the radius of the satellite's orbit around the planet is 7.14 x 10⁶ m.

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The radius of the satellite's orbit is approximately 619,674.42 meters, and the centripetal acceleration of the satellite in orbit is about 41.98 m/s².

To find the radius of the satellite's orbit, we can use the formula for centripetal force in uniform circular motion.

Given data:

  • Centripetal Force [tex](F_c) = 215 N[/tex]
  • Mass [tex](m) = 1,100 kg[/tex]
  • Speed [tex](v) = 5,100 m/s[/tex]

The formula for centripetal force is:

[tex]F_c = (m \times v^2) / r[/tex]

Rearranging to solve for the radius (r):

[tex]r = (m \times v^2) / F_c[/tex]

Plugging in the values:

[tex]r = (1,100 kg \times (5,100 m/s)^2) / 215 N\\r = (1,100 \times 26,010,000) / 215\\r = 133,230,000 / 215\\r = 619,674.42 meters[/tex]

So, the radius of the satellite's orbit is approximately 619,674.42 meters.

To find the acceleration (a), we use:

[tex]a = v^2 / r[/tex]

Using the radius we just calculated:

[tex]a = (5,100 m/s)^2 / 619,674.42 m\\a = 26,010,000 / 619,674.42\\a = 41.98 m/s^2[/tex]

So, the acceleration of this object is approximately [tex]41.98 m/s^2.[/tex]