The First of Two Identical Boxes of Mass M Is $\degree$

question 9

Multiple Choice

The first of two identical boxes of mass m is sitting on level ground. The second box is sitting on a ramp that makes a 20 $\degree$ angle with the ground. The normal force of the level ground on the first box is NL; the normal force of the ramp on the second box is NR. Which statement is correct?

• A)NR = NL = mg.
• B)NL = mg; NR = mg sin 20\(\degree\).
• C)NL = mg; NR = mg cos 20\(\degree\).
• D)NL = mg; NR = -mg cos 20\(\degree\).
• E)NR = -NL = -mg.

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Definitions:

Polynomials

An algebraic expression composed of variables and coefficients, structured as the sum of terms, where each term includes a variable raised to a non-negative integer power.

Vertical Format

A way of presenting information or data in columns that run up and down on a page or screen.

Special Product Pattern

Patterns that emerge from multiplying polynomials in certain ways, making multiplication easier.

Polynomial Function

A mathematical expression consisting of variables, coefficients, and non-negative integer exponents, combined through addition, subtraction, and multiplication.