EXERCISE 1.5XaA rock weighs 20 N. Two girls stand on opposite sides of the rock and lift it by eachexerting a force of 12 N at 30° to the vertical.1.2.Calculate the vertical upward force exerted on the rock.Will the rock be lifted? Explain your answer.Adding more than two vectorsIf we want to add more than two vectors, we can resolve each vector into itshorizontal (x) and vertical (y) components. We then add the horizontal componeof all the vectors to get a resultant horizontal component. We do the same for allvertical components. Finally, we find the resultant of the calculated horizontal avertical components. This gives us the resultant of all the origiTS.WORKED EXAMPLEDetermine the resultant force ein Figure 1.18 are exerted ororces showp2. N at 45°

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EXERCISE 1.5 A rock weighs 20 N. Two girls stand on opposite sides of the rock and lift it by each exerting a force of 12 N at 30° to the vertical. 1. 2. Calculate the vertical upward force exerted on the rock. Will the rock be lifted? Explain your answer.

EXERCISE 1.5 A rock weighs 20 N. Two girls stand on opposite sides of the rock and lift it by each exerting a force of 12 N at 30° to the vertical. 1. 2. Calculate the vertical upward force exerted on the rock. Will the rock be lifted? Explain your answer.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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EXERCISE 1.5
Xa
A rock weighs 20 N. Two girls stand on opposite sides of the rock and lift it by each
exerting a force of 12 N at 30° to the vertical.
1.
2.
Calculate the vertical upward force exerted on the rock.
Will the rock be lifted? Explain your answer.
Adding more than two vectors
If we want to add more than two vectors, we can resolve each vector into its
horizontal (x) and vertical (y) components. We then add the horizontal compone
of all the vectors to get a resultant horizontal component. We do the same for all
vertical components. Finally, we find the resultant of the calculated horizontal a
vertical components. This gives us the resultant of all the origi
TS.
WORKED EXAMPLE
Determine the resultant force e
in Figure 1.18 are exerted or
orces showp
2. N at 45°

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