The moon is about $3.8 \times 10^{5} K m$ from the centre of the earth. It takes about $27$ days for completing the orbit around the earth. Calculate the speed of moon in Km per day.

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Solution

T = $\frac{2 π R}{V}$

27 days = $\frac{2 π (3.8 \times 10^{5})}{V}$ km

V = $\frac{7.2 π \times 10^{5}}{27} \frac{k m}{d a y s}$
= $8.4 \times 10^{4}$ km / days

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The moon is about 3.8×105 Km from the centre of the earth. It takes about 27 days for completing the orbit around the earth. Calculate the speed of moon in Km per day.

T = 2πRV27 days = 2π(3.8×105)VkmV = 7.2π×10527kmdays = 8.4×104 km / days

The moon is about $3.8 \times 10^{5} K m$ from the centre of the earth. It takes about $27$ days for completing the orbit around the earth. Calculate the speed of moon in Km per day.

T = $\frac{2 π R}{V}$

27 days = $\frac{2 π (3.8 \times 10^{5})}{V}$ km

V = $\frac{7.2 π \times 10^{5}}{27} \frac{k m}{d a y s}$
= $8.4 \times 10^{4}$ km / days