Laboratory exercises to accompany Carhart and Chute's First principles of physics . act on the same body to pro-duce equilibrium, then Complete the following by comparing with the momentof the third force around the second, both as to magnitudeand direction: When three parallel forces act on the same body toproduce equilibrium, the moment of one of them aboutthe second is 80 LABORATORY EXERCISES EXPERIMENT 20 The Lever Arm of a Force OBJECT. To determine the lever arms of non-parallel forces. Apparatus. Meter stick, with a hole on the center divisionnear one edge, drilled slightly larger than
Laboratory exercises to accompany Carhart and Chute's First principles of physics . act on the same body to pro-duce equilibrium, then Complete the following by comparing with the momentof the third force around the second, both as to magnitudeand direction: When three parallel forces act on the same body toproduce equilibrium, the moment of one of them aboutthe second is 80 LABORATORY EXERCISES EXPERIMENT 20 The Lever Arm of a Force OBJECT. To determine the lever arms of non-parallel forces. Apparatus. Meter stick, with a hole on the center divisionnear one edge, drilled slightly larger than the shank of a -f screweye; short piece of board about |/ stock; screw eye, ?¥; fishline; four clamps; half meter stick; draughtsmans triangle,90°, 60°, and 30.° Introductory: In using such a lever as a crowbar, pump handle, orhammer, it is seldom that the forces exerted on and by thelever are parallel to one another. Under such circum-stances, it would be desirable to know whether the leverarm is to be measured along the lever or at right angles tothe applied force. fiH^i. Fig. 31.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysics, bookyear1913
