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Thank you We sneak and here's your shmoop du jour

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Brought to you by planet z knock We know what

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you're thinking there's No planet z noche But maybe that's

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just what they want us to think All right the

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gravity on planet zi knock is half a strong as

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earth's gravity If a student weighs a hundred pounds on

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earth how much would he weigh on planet zi knock

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and here the potential answers right there Okay well if

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we just went ahead and guessed b since that's half

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of one hundred fifty pounds Well a good job that's

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Correct But while we appreciate a good guesser let's take

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a look at the mass so we can understand why

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b is the right answer Well wait is the measure

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of gravity's force on the mass of an object The

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equation that expresses this relationship is wait equals mass times

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gravity right there Weapons of mass gravity Okay well on

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earth gravity equals nine point eight meters per second squared

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let's Change meters toe feed and work with thirty two

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feet per second squared And since we already know the

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students wait one hundred fifteen pounds we can figure out

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his mass with a little algebra if hundred fifty pounds

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e equals m multiplied by thirty two then we couldn't

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solve the equation by dividing both sides by thirty two

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which would give us a mass of four point six

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nine Now on xena the gravity is half a strong

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so that means g now equals sixteen feet per second

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squared In this case we multiply sixteen feet per second

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squared by four point six nine slugs and we'd get

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seventy five pounds So next time we need to drop

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a few pounds without diet or exercise We'll just hop

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on a spaceship take a left past neptune and in

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a few hundred light years we'll get to z knock

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And we just need to remember to bring a gift

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for the sinak ian's They're pretty cool but we'll really 00:01:45.802 --> [endTime] kind of needy

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