Observing the Forces Involved in Static Friction Under Static Situations
Experimental apparatus. Inset shows details of cart, force sensor, bracket, and meterstick.
Extended free-body diagram with variables defined.
Force sensor reading as a function of position of clamp along meterstick. The bottom of the meterstick was maintained at 0.75 m away from the base of the vertical wall. The solid line is a linear fit to this data. The slope and intercept agree with the calculation to within 2% error.
Force sensor reading as a function of the distance of the base of the meterstick from the vertical wall. The clamp was positioned at 0.5 m on the meterstick. The solid curve is a calculation based on Eqs. (3) and (4) .
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