A 186-Kg Block Is Held in Place Against the Spring by by a 81-N

question 8

Multiple Choice

A 1.86-kg block is held in place against the spring by a 81-N horizontal external force (see the figure) . The external force is removed, and the block is projected with a velocity v₁ = 1.2 m/s upon separation from the spring. The block descends a ramp and has a velocity at the bottom. The track is frictionless between points A and B. The block enters a rough section at B, extending to E. The coefficient of kinetic friction over this section is 0.28. The velocity of the block is v₃ = 1.4 m/s at C. The block moves on to D, where it stops. The height h of the ramp is closest to

• A) 11
• B) 7.3
• C) 15
• D) 17
• E) 18

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Definitions:

Partial Equity Method

An accounting approach used when an investing entity owns a significant but not controlling stake in another company, recognizing income based on the proportionate share of the investee's earnings.

Investment Account

A financial account held at a financial institution that holds securities, such as stocks or bonds, for investment purposes.

Goodwill Impairment

An accounting charge that companies record when the value of goodwill on the balance sheet exceeds the tested fair market value.