Multiple-Object Systems Without Friction: Two Bodies P and Q on a Smooth

question 42

Multiple Choice

Multiple-object systems without friction: Two bodies P and Q on a smooth horizontal surface are connected by a light cord. The mass of P is greater than that of Q. A horizontal force (of magnitude F) is applied to Q as shown in the figure, accelerating the bodies to the right. The magnitude of the force exerted by the connecting cord on body P will be

• A) zero.
• B) less than F but not zero.
• C) equal to F.
• D) greater than F.

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Definitions:

Internal Rate of Return

A financial metric used to estimate the profitability of potential investments, calculated as the rate of return that makes the net present value of all cash flows from a particular project equal to zero.

Present Value

A calculation that determines the current value of a future amount of money or stream of cash flows given a specified rate of return.

Annual Cash Flows

The total amount of money being transferred into and out of a business over one year, considered in terms of liquidity and financial health.

Geothermal Heat Pump

A central heating and/or cooling system that transfers heat to or from the ground, using the earth as a heat source or sink.