The plank is a great way to strengthen abdominal, back, and shoulder muscles. You can also use this exercise position to locate your center of gravity. Holding plank position with a scale under his toes and another under his forearms, one athlete measured that 66.0% of his weight was supported by his forearms and 34.0% by his toes. (That is, the total normal forces on his forearms and toes were 0.660w and 0.340w, respectively, where w is the athlete’s weight.) He is 1.80 m tall, and in plank position the distance from his toes to the middle of his forearms is 1.53 m. How far from his toes is his center of gravity?
The plank is a great way to strengthen abdominal, back, and shoulder muscles. You can also use this exercise position to locate your center of gravity. Holding plank position with a scale under his toes and another under his forearms, one athlete measured that 66.0% of his weight was supported by his forearms and 34.0% by his toes. (That is, the total normal forces on his forearms and toes were 0.660w and 0.340w, respectively, where w is the athlete’s weight.) He is 1.80 m tall, and in plank position the distance from his toes to the middle of his forearms is 1.53 m. How far from his toes is his center of gravity?
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The plank is a great way to strengthen abdominal, back,
and shoulder muscles. You can also use this exercise position to locate
your center of gravity. Holding plank position with a scale under his
toes and another under his forearms, one athlete measured that 66.0%
of his weight was supported by his forearms and 34.0% by his toes.
(That is, the total normal forces on his forearms and toes were 0.660w
and 0.340w, respectively, where w is the athlete’s weight.) He is 1.80 m
tall, and in plank position the distance from his toes to the middle of
his forearms is 1.53 m. How far from his toes is his center of gravity?
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