volume_mute

Given the below figure the net force is 220 lb, what are the mathematical steps to get the net force?

publish date2022/08/03 05:36:00 GMT+10

volume_mute

Cars collision

mathematical-methods-calculate-vector-addition.jpg

Use arrows to represent exerted forces
Use comparable measurement units to forces (e.g. cm)
Replace the image with an abstract figure showing cars as arrows with headings
The more the force the more the length of the arrow
Hock arrows end-to-end but keep length and direction
Draw an arrow from the tail of the long arrow to the head of the short arrow
measure the length of the new arrow and multiply by value of lb = 1 cm

Correct Answer

(1) Use arrows to represent exerted forces
(2) Use comparable measurement units to forces (e.g. cm)
(3) Replace the image with an abstract figure showing cars as arrows with headings
(4) The more the force the more the length of the arrow
(5) Hock arrows end-to-end but keep length and direction
(6) Draw an arrow from the tail of the long arrow to the head of the short arrow
(7) measure the length of the new arrow and multiply by value of lb = 1 cm

Explanation

mathematical-methods-calculate-vector-addition-solution.jpg

Since 1 cm = 40 lb, and the net arrow = 5.5 cm, then the net force = 220 lb

Reference

Basic Physics: A Self-Teaching Guide,go-math-science.com


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