Engineering An Arm Lab Report - Engineering an Arm PreLab Exercises 1 The force that the wire exerts to keep the rod horizontal is calculated by doing

# Engineering An Arm Lab Report - Engineering an Arm PreLab...

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Engineering an Arm PreLab Exercises 1. The force ( ࠵? ! ) that the wire exerts to keep the rod horizontal is calculated by doing the following: Work : where, ࠵? ! = ࠵? ! ࠵? and since it stays horizontal, rotational equilibrium is achieved: ࠵? ! = ࠵? ! for ࠵? = ࠵? ࠵? ࠵? ! = ࠵?࠵? 1 where 1 is in meters (or 100 cm) ࠵? ! = ࠵? ! ࠵? ! = ࠵?࠵? 0 . 2 where 0.2 is in meters (or 20 cm) so, ࠵? ! = !" ( ! ) ! . ! Answer : ࠵? ! = 5 ࠵?࠵? where 5 is in meters At the fixed end of the rope, the force is 5 ࠵?࠵? as well since it is in rotational equilibrium. The direction of the force ( ࠵? ! ) is upward, to cancel out the downward force of ࠵? ! 2.For a system in rotational equilibrium, ࠵?࠵?=!!"#
Experimental Design:When characterizing the spring (part 1), the experimental design followed was rather simple. It consisted of a clamp attached to a spring (facing directly downwards) and adding mass to the spring. Initially, the spring’s bottom end was measured when no weight (gravitational) force was pushing down on it (at 24 cm) using at 100 cm ruler provided. For each of the next seventeen trials, a weight was added of mass from either 1