A Uniform Ladder Is 10 M Long and Weighs 400 $\degree$

question 45

Multiple Choice

A uniform ladder is 10 m long and weighs 400 N. It rests with its upper end against a frictionless vertical wall. Its lower end rests on the ground and is prevented from slipping by a peg driven into the ground. The ladder makes a 30 $\degree$ angle with the horizontal. The force exerted on the wall by the ladder is:

• A) 47 N
• B) 74 N
• C) 120 N
• D) 350 N
• E) 460 N

---

Definitions:

Test Statistic

A value calculated from sample data during a hypothesis test used to determine the p-value or to compare against a critical value to accept or reject a null hypothesis.

Hypotheses

Proposed explanations or predictions, typically stated in a testable form, that can be examined through experimentation or observation.

Sample Mean

The average value computed from a subset (sample) of a population, used to estimate the population's mean.

Sample Standard Deviation

A measure that quantifies the amount of variation or dispersion of a set of sample data values.