Your new designer chair has an S-shaped tubular metal frame that behaves just like a spring. When your friend, who weighs 610 N, sits on the chair, it bends downward 4 cm. What is the spring constant for this chair?
We can use Hooke's law to solve the problem
Here spring chair compress downward by 4 cm = 0.04 m and friend weigh 610 N that is force.
so Hooke's law F = -kX
here k is constant
-k = F / X = 610 / 0.04
spring constant = - 15250 Newton/meter
how would you put 15250 in significant digits of 3?
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