I had this question already I still have my answer the answer is D is the correct answer.
The spring constant, k, will be equal to 18 N/m. The spring constant is defined as the force-to-displaced-length ratio.
<h3 /><h3>What is the spring constant?</h3>
Spring constant is defined as the ratio of force per unit displaced length.
Given data;
Mass of block,m=0.250 k
Amplitude,A = 0.125 m
Velocity,V=3.00 m/
Spring constant, K=?
The spring constant formula when the spring oscillates at the specified amplitude A:
Hence, the spring constant, k will be 18 N/m
To learn more about the spring constant refer:
brainly.com/question/4291098
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Because of friction, net work on the crate is less. ∆KE = Net work = net force x distance = (100 N – 70 N)(10 m) = 300 J.