The spring has a stiffness of 1600 N/m and a relaxed length of 0.15 m . You pull the mass until the stretch of the spring is 0.08 m and release it from rest. The block begins to oscillate with negligible friction.

What is the block's speed when the stretch of the spring is 0.06 m?

0.946 m/s

Explanation:

Given,

Spring stiffness, k = 1600 N/m

relaxed length, l = 0.15 m

spring is stretched to, A = 0.08 m

Speed of block at, x = 0.06 m

Using mass of the block be 5 Kg

Using Conservation of energy

Hence, the speed of the block is equal to 0.946 m/s

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

what is the actual question though?