a Explain what is meant by equilibrium. b Draw a vector diagram to represent the three forces acting on the picture in the vertical plane. Label each force clearly with its name and show the direction of each force with an arrow. The tension in the cord is 45 N and the angle that each end of the cord makes with the horizontal is 50°. Calculate: the vertical component of the tension in the cord the weight of the picture. i ii

College Physics
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Chapter1: Units, Trigonometry. And Vectors
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12 This diagram shows a picture hanging symmetrically by two cords from
a nail fixed to a wall. The picture is in equilibrium.
nail
cord
50°
50°
Figure 4.38
Transcribed Image Text:12 This diagram shows a picture hanging symmetrically by two cords from a nail fixed to a wall. The picture is in equilibrium. nail cord 50° 50° Figure 4.38
Explain what is meant by equilibrium.
a
Draw a vector diagram to represent the three forces acting on the
picture in the vertical plane. Label each force clearly with its name
and show the direction of each force with an arrow.
The tension in the cord is 45 N and the angle that each end of the
cord makes with the horizontal is 50°. Calculate:
the vertical component of the tension in the cord
the weight of the picture.
i
ii
Transcribed Image Text:Explain what is meant by equilibrium. a Draw a vector diagram to represent the three forces acting on the picture in the vertical plane. Label each force clearly with its name and show the direction of each force with an arrow. The tension in the cord is 45 N and the angle that each end of the cord makes with the horizontal is 50°. Calculate: the vertical component of the tension in the cord the weight of the picture. i ii
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