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Jack gave John the following challenge: "If you sit down in that chair, I bet I can make you get out of it before I run around the chair three times," he said. "Aw, that's not fair," John said. "You'll just prick me with a pin or something." "Nope," Jack said. "I won't touch you, either directly or with any object. If you get out of the chair, it'll be by your own choice." John thought, accepted the challenge, and lo and behold, Jack won the bet. How did he do it? |
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A strong man at the circus can bench press 1200 pounds. How much can he lift with a pulley and a 25 foot rope when the rope weighs two pounds, the pulley is attached to the ceiling, the ceiling is 10 feet from the floor, and the man is standing on the floor? |
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