A Block of Mass M Slides Down a Frictionless Plane

question 11

Multiple Choice

A block of mass M slides down a frictionless plane inclined at an angle θ with the horizontal. The normal reaction force exerted by the plane on the block is

• A) Mg.
• B) Mg sin θ.
• C) Mg cos θ.
• D) Mg tan θ.
• E) zero, since the plane is frictionless.

---

Definitions:

Emigrate

To leave one's country to live in another permanently.

China

A country in East Asia, the world's most populous nation, with a rich history, rapidly growing economy, and significant global influence.

Bakke Case

A landmark decision by the U.S. Supreme Court in 1978 that ruled on the constitutionality of affirmative action policies in educational admissions processes.

Supreme Court

The highest federal court in the United States, which has the ultimate appellate jurisdiction and holds the power of judicial review.