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circular motion fsb - pg 72 #48-51

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1

pg 72; #51: A 1500 kg satellite is in a stable orbit at an altitude of 4.0×10^5 m above the Earth’s surface. What is the satellite’s total energy in this orbit? List all the steps.

  1. Make a list of the given values to determine which formula to use.

  2. Rewrite Total Energy = Ep and Ek as Total Energy = -GMm/r + (1/2)(GMm/r)

  3. Input values into Total Energy = -(1/2)(GMm/r)

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2

pg 72; #51: A 1500 kg satellite is in a stable orbit at an altitude of 4.0×10^5 m above the Earth’s surface. What is the satellite’s total energy in this orbit? What is step 1?

  1. Make a list of the given values to determine which formula to use.

New cards
3

pg 72; #51: A 1500 kg satellite is in a stable orbit at an altitude of 4.0×10^5 m above the Earth’s surface. What is the satellite’s total energy in this orbit? What is step 2?

  1. Rewrite Total Energy = Ep and Ek as Total Energy = -GMm/r + (1/2)(GMm/r)

<ol start="2"><li><p style="text-align: start">Rewrite Total Energy = Ep and Ek as Total Energy = -GMm/r + (1/2)(GMm/r)</p></li></ol>
New cards
4

pg 72; #51: A 1500 kg satellite is in a stable orbit at an altitude of 4.0×10^5 m above the Earth’s surface. What is the satellite’s total energy in this orbit? What is step 3?

  1. Input values into Total Energy = -(1/2)(GMm/r) and solve.

<ol start="3"><li><p style="text-align: start">Input values into Total Energy = -(1/2)(GMm/r) and solve.</p></li></ol>
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5

pg 72; #50: What is the gravitational field strength on the surface of a planetoid with a mass of 7.4 × 10^22 kg and a radius of 1.7 × 10^6? List all the steps.

  1. List out all of the given values and the unknown value.

  2. Identify the formula.

  3. Plug in values and solve for g.

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6

pg 72; #50: What is the gravitational field strength on the surface of a planetoid with a mass of 7.4 × 10^22 kg and a radius of 1.7 × 10^6? What is step 1?

  1. List all of the known values and unknown value.

    M = 7.4 × 10^22 kg

    r = 1.7 × 10^6

    G = 6.67 × 10^-11 Nm²/kg²

    g = ?

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7

pg 72; #50: What is the gravitational field strength on the surface of a planetoid with a mass of 7.4 × 10^22 kg and a radius of 1.7 × 10^6? What is step 2?

  1. Identify the formula.

    g = GM/r²

New cards
8

pg 72; #50: What is the gravitational field strength on the surface of a planetoid with a mass of 7.4 × 10^22 kg and a radius of 1.7 × 10^6? What is step 3?

  1. Input the values into the formula.

    g = (6.67×10^-11)(7.4×10^22 kg)/(1.7×10^6 m)²

    g = 1.7 N/kg

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