Provide clear explanation so i can understand how you solved it.

PHYS 211 RECITATION EXERCISE 2: WIND WORK A block (B) of mass (m) is attached to a spring of spring constant k. The mass rests on a surface with kinetic friction uk. You pull on the block to the right and stretch the spring a distance d from its relaxed position. A steady wind (W) is blowing to left and It applies a constant force on the block denoted FW on B. When you release the block, it moves to the left until it comes to rest at distance of 2d from the relaxed position. What is the force from the wind? You cannot use dynamics and Newton's law here because when the block is at rest, there is a static friction force of unknown magnitude (and the spring force varies). Energy methods might be more successful. MODEL: We can treat the block as particle. . The wind force is constant. 5. VISUALIZE: First draw a sketch of before and after situation. 6. VISUALIZE: Draw the energy bar charts for the energy before and after. - - - - - - - - - - - . . .- - . ... - . . .- - - - - - - - - - . . .- - . . .. - - . .- - . . .. - . ... - - -- - - - - - - - . .. - . ... - - . .- - - - - - - . . .- Ki + Ui + Wext Kf + Uf + Eth PHYS 211 RECITATION 6 7. SOLVE for the force of the wind on the block. 8. ASSESS: Does your answer has the right unit