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exercise equipment at the gym consists of various springs. in one exercise, a woman pulls a handle grip attached to the free end of a spring to 0.80 m from its unstrained position. the other end of the spring (spring constant = 45 n/m) is held in place by the equipment frame. what is the magnitude of the force that the woman is applying to the handle grip?
29 n
66 n
36 n
42 n
54 n

Explanation:

Step1: Recall Hooke's Law

Hooke's Law: $F = kx$
Where $k=45\,\text{N/m}$, $x=0.80\,\text{m}$

Step2: Calculate the force

$F = 45 \times 0.80 = 36\,\text{N}$

Answer:

36 N