Your new designer chair has an S-shaped tubular metal frame that behaves just like a spring with the spring constant 14000 N/m. When your friend, who weighs 940 N, sits on the chair, how far does it bend?

WE know that F = k x

where k : Spring constant = 14000 N/m

F = 940 N

therefore , x = F/k = 940 /14000 = 0.0671 m or 6.71 cm

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