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Motion In Straight Line

Question
CBSEENPH11017503

The acceleration due to gravity at the moon’s surface is 1.67 m/s2. If the radius of the moon is 1.74 x 10 m, calculate the mass of the moon.

Solution

Given that,
Acceleration due to gravity, straight g equals GM over straight R squared
∴                straight M equals gR squared over straight G 
Here, we have
Acceleration, straight g equals 1.67 straight m divided by straight s squared    

Radius, straight R equals 1.74 cross times 10 to the power of 6 straight m 
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                                  equals space 7.58 cross times 10 to the power of 22 kg