Moments, levers and gears

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Question 15

Easy

A student designs a decorative hanging mobile shown in Figure 1. A horizontal beam of length 100 cm is suspended from a ceiling by a vertical cord at pivot point $P$ , located at the 25 cm mark.

A diagram of a hanging mobile suspended from a pivot point P on a support wire. The vertical wire connects to the horizontal beam at the 25 cm mark. A model dolphin (D) hangs from the 45 cm mark. A model turtle (T) hangs from the 75 cm mark. The weight of D is 2.5 N and the weight of T is 1.2 N.

The weights of the models are:

Model dolphin, D: 2.5 N
Model turtle, T: 1.2 N

Show that the total moment of D and T about pivot $P\,$ is 1.10 N m.

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Moments, levers and gears

Question 15

Moments, levers and gears Questions

Moments, levers and gears

Question 15

Moments, levers and gears Questions