Physics Review Question Part III
Unit: Mechanics
Year: 1997 Question#: 118
Base your answers to questions 116 through 118 on the information and vector diagram below.
- A 20.-newton force due north and a 40.-newton force due east act concurrently on a 10.-kilogram object, located at point P.
118. What is the magnitude of the resultant force? [1 point]
There are two methods to answer this question.
Method 1- Direct Measurement: Take your ruler and measure the length of the resultant vector (in red). This length is approximately 5.5cm when measured on paper. From question 116 we know the scale is 8 N/cm so if we take (5.5 cm) * (8N/cm) we get 45N as our answer.
Method 2 - Pythagorean Theorem: Calculate the length of the resultant vector (in red) by treating the right triangle with the Pythagorean Theorem.
