Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles39m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
8. Vectors
Geometric Vectors
Problem 7.23b
Textbook Question
Textbook QuestionUse the parallelogram rule to find the magnitude of the resultant force for the two forces shown in each figure. Round answers to the nearest tenth.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Parallelogram Rule
The parallelogram rule is a method used to determine the resultant vector when two vectors are acting simultaneously. It states that if two vectors are represented as two adjacent sides of a parallelogram, the diagonal of the parallelogram represents the resultant vector in both magnitude and direction. This rule is particularly useful in physics and engineering for analyzing forces and motion.
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Vector Magnitude
The magnitude of a vector is a measure of its length or size, often represented as a non-negative number. In the context of forces, the magnitude indicates the strength of the force being applied. To calculate the magnitude of a resultant vector, one typically uses the Pythagorean theorem when the vectors are perpendicular, or other trigonometric methods when they are not.
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Rounding Numbers
Rounding numbers is the process of adjusting a number to a specified degree of accuracy, often to simplify calculations or present results clearly. In this context, rounding to the nearest tenth means adjusting the resultant force's magnitude to one decimal place. This is important for reporting results in a standardized format, making them easier to interpret and compare.
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