A Rectangular Block Is Moving Along a Frictionless Path When

question 30

Multiple Choice

A rectangular block is moving along a frictionless path when it encounters the circular loop as shown. The block passes points 1,2,3,4,1 before returning to the horizontal track. At point 3:

• A) its mechanical energy is a minimum
• B) the forces on it are balanced
• C) it is not accelerating
• D) its speed is a minimum
• E) it experiences a net upward force

---

Definitions:

Marginal Cost

The cost of producing one additional unit of a product or service, which can inform decisions on how much to produce.

Producing Purse

The process involved in creating and manufacturing handbags.

Long-Run Average Total Cost

A curve that reflects the lowest cost at which a firm can produce any given level of output in the long term, when all inputs are variable.

Short-Run Average Cost Curves

Graphs that show how the average cost of production changes as the level of output is varied in the short term.