Two Blocks,A and B,are Being Pulled to the Right Along

question 12

Multiple Choice

Two blocks,A and B,are being pulled to the right along a horizontal surface by a horizontal 100 N pull,as shown in the figure.Both of them are moving together at a constant velocity of 2.0 m/s to the right,and both weigh the same.Which of the figures below shows a correct free-body diagram of the horizontal forces acting on lower block,B?

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Definitions:

Discount Factor

A multiplicative factor used to calculate the present value of future cash flows or income streams, reflecting the time value of money.

Time Value

The viewpoint that money on hand today is considered more valuable than the same amount received in the future, due to potential earnings.

Money

A medium of exchange that facilitates trade, acting as a unit of account, a store of value, and sometimes, a standard of deferred payment.

Present Value Factors

Multipliers used in calculating the present value of a future cash flow, taking into account the time value of money and interest rates.