An 080-Kg Block Is Held in Place Against the Spring by by a 67-N

question 14

Multiple Choice

An 0.80-kg block is held in place against the spring by a 67-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 v₂ = 1.9 m/s 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 0.39. The velocity of the block is v₃ = 1.4 m/s at C. The block moves on to D, where it stops. The spring constant of the spring is closest to

• A) 3900 N/m.
• B) 2600 N/m.
• C) 2000 N/m.
• D) 1600 N/m.
• E) 1100 N/m.

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Definitions:

Profit Margin

A financial performance ratio that shows the percentage of profit a company produces from its total revenue.

Net Working Capital

The contrast between a firm's assets available in the short term and the liabilities due in the same period, pointing to its immediate financial condition.

Accounts Payable

Liabilities of a business that are due to be paid to creditors within a short period, usually one year.

Balance Sheet

A financial statement that shows the assets, liabilities, and shareholders' equity of a company at a specific point in time, providing a snapshot of its financial condition.