Name Lab Perlod ay Date 3.11 2 Station Prelab 2 Questions Force Table 1 1 If F,

Question

Name Lab Perlod ay Date 3.11 2 Station Prelab 2 Questions Force Table 1 1 If F, 97 g@338°, then its components are al F-29 g.Fiy-93g Col F. = 90 g,F,=-36 g 2| If the components of the resultant are R, 43 g. R,--184 g, then the components of the equil: brant are E-43 g, E, 184 g. Ol True b| False 3| In experimentally determining the equilibrant force, the direction (o)js found first, then the magnitude (Eap) a l True BI False 4 I Which one is NOT necessary for ensuring accuracy of measurement? Making sure the strings are all the same length. bI Making sure the mass hangers are stationary, not swinging. c/ Making sure the strings follow straight lines running from pulley to center post. counter-clockwise from the +x-axis) must lie in the range 180-270 al True bl False 5] If a vector has a positive y-component and a negative x-component, its direction (measured

Explanation / Answer

here,

1)

F1 = 97 g

theta = 338 degree

F1x = F1 * cos(theta) = 90 g

F1y = F1 * sin(theta) = - 36 g

the correct option is c)

2)

the component of equilibrant and resultant have sum zero

Rx + Ex = 0

Ex = - 43 g

and Ry + Ey = 0

Ey = 184 g

so, it is correct

3)

it is False

you may calaculate any of them first

4)

same length of string is necessarly not required

so, correct option is a)

5)

if a vector has positive y-component and negative x-component

it is in seccond quadrant

and theta must between 90 - 180 degree

so, it is b) False

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