PHYSICS I LAB Torque and Static Equilibrium Equilibrium of 2-Dimensional Non-Con

Question

PHYSICS I LAB Torque and Static Equilibrium Equilibrium of 2-Dimensional Non-Concurrent Forces Background: Torque is defined as being the tendency of a force to produce a change in rotational motion of an extended object. This change in rotational motion is affected by both the magnitude of the applied force, F, and by its moment arm, r (distance from a rotational point). For the special condition where the force is perpendicular to the moment arm, we have torque as: where torque is: positive for a counterclockwise rotation and negative for a clockwise rotation. For an object to be in static equilibrium, two conditions must be satisfied: The sum of the forces must be zero: ? 0 and The sum of the torques (about any rotational point) must be zero: - Objective: To use analytical vector methods to analyze the conditions of static equilibrium. Apparatus: Lab Stands and clamps Meter Stick Lab Pro Interface Two Dual Force Sensors Meter stick with 5 mass hangers Various Masses Digital scale Carpenter's level 1. Open the File: ULabPro Labs Torque.cmbl Determine the mass of the meter stick including the two end clips. The weight of the entire meter stick will act through its center-of-mass. Zero the sensors, and then hang the meter stick as shown. Make any necessary adjustment to the sensors so that they are vertical. Make certain that the meter stick is horizontal by using a carpenter's level. 2. 3. Select and arrange two different weights (mass combinations), at two arbitrarily chosen locations along the meter stick. Represent the weights by W,&W.with; the weight of the meter stick being represented by WRepresent their positions by xi &x.; with the weight of the meter stick acting through its center of mass, at 4. Determine the unk either the left or right ends of the meter stick as your point of nown forces of your system, utilizing the given conditions of static equilibrium. Use rotation. Represent these upwand forces by F,. for the left sensor, and F for the right sensor. Represent their locations by n and x

Explanation / Answer

What am I suppose to do..???

I suppose you have a problem findign torque. In simple terms torque = Force * Perpendicular distance.

Clockwise torque is negative and counter clockwise torque is positive

For the readings which you provided in written, the given values are of mass not weight. Because weight is a force , mass is not. so we need to convert mass in grams to kilograms then multiply by 9.81 to get weight in newtons.

After that you can use the formula for torque

so, consider your written values,

We get

- 1.268*0.49 - 5.0659*0.42 - 2.1209*0.64 + FRXR = 0

Solving for FR , Here XR is the total distance from left end to right end which i suppose is 0.49*2 = 0.98

solving we get, FR = 4.19012

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