Interesting and Humour - page 2694
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Two identical boats are approaching the jetty. Both boaters are pulled up with a rope. The opposite end of the rope of the left boat is tied to a bollard on the pier; the opposite end of the rope of the right boat is in the hands of the sailor on the pier, who also pulls the rope towards himself. All three of them exert the same effort and act in perfect synchrony.
Which boat will moor faster?
Left? Right? Simultaneously?
the right one is faster, if you remove everything and leave only the points, then the right points will approach each other faster than the left ones.
The points are the contact points between the sailors' hands and the rope, and the stump on the shore.
In other words, the boats are in different frames of reference.
physics 6-9 grade
If the picture is used to illustrate the theme of Newton's third law, the boats will move at the same speed.
If used as an illustration of Newton's third law, the boats will move at twice the speed because the two sailors will do the same work twice as fast.
how much you can think.... there are two sailors in the right picture... the one on the pier will fall in the water anyway =) so boat number one will come first =)
If the picture is used to illustrate the theme of Newton's third law, the boats will move at the same speed.
If used as an illustration of Newton's third law, the boats will move at the same speed, because the two sailors will do the same work twice as fast.
Two identical boats are approaching the jetty. Both boaters are pulled up by a rope. The opposite end of the rope of the left boat is tied to a bollard on the wharf; the opposite end of the rope of the right boat is in the hands of the sailor on the wharf, who also pulls the rope towards himself. All three of them exert the same effort and act in perfect synchrony.
Which boat will moor faster?
Left? Right? Simultaneously?
Puzzling mechanics - Perelman J.I.
/go?link=http://www.booksshare.net/index.php?id1=4&category=mechanics&author=pereliman-ya-i&book=1933&page=7
Puzzling mechanics - Perelman J.I.
/go?link=http://www.booksshare.net/index.php?id1=4&category=mechanics&author=pereliman-ya-i&book=1933&page=7