Brain Teasers
Heavy Blocks
There are three blocks on a table: a 1 kilogram block, a 500 gram block, and a 2 kilogram block.
What is the weight of the heaviest block on the table?
What is the weight of the heaviest block on the table?
Hint
Make sure you understand what the question is asking you.Answer
About 19.6 Newtons.Weight is a force caused by gravity, and so is measured in Newtons. Mass, how much "stuff" in each block, is measured in kilograms.
By Newton's Second Law: Force = Mass * Acceleration. The acceleration due to gravity on the Earth's surface is about 9.8 Newtons/Kilogram, so Force = 2 * 9.8 = 19.6 Newtons.
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