A 10-Kg Block on a Horizontal Frictionless Surface Is Attached

question 42

Multiple Choice

A 10-kg block on a horizontal frictionless surface is attached to a light spring (force constant = 1.2 kN/m) .The block is initially at rest at its equilibrium position when a force (magnitude P) acting parallel to the surface is applied to the block,as shown.When the block is 8.0 cm from the equilibrium position,it has a speed of 0.80 m/s.How much work is done on the block by the force P as the block moves the 8.0 cm?

• A)8.3 J
• B)6.4 J
• C)7.0 J
• D)7.7 J
• E)3.9 J

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Definitions:

Net Present Value

A financial analysis method used to determine the overall value of a projected investment or project by calculating the present value of expected future cash flows.

Operating Cash Flow

Measures the cash generated by a company's normal business operations.

Degree of Sensitivity

Refers to the responsiveness measure of how a dependent variable such as demand or price reacts to changes in an independent variable.

Net Present Value

The calculation that compares the value of money today to the value of that same money in the future, taking inflation and returns into account.