Gravesand's Board: Pulleys, Knot & Optical Alignment Pins
Equilibrium Achieved
Parallelogram Construction: Collinear Vectors $\vec{P}, \vec{Q}$ and Resultant $\vec{R}$
Included Angle θ = 0.0°
Tension $P$
60 g.wt
Tension $Q$
60 g.wt
Resultant $R$
0.0 g.wt
Actual $W$
75.0 g.wt
Unknown Suspended Body ($W$)
Left Arm Slotted Weights ($P$)
60 g.wt
Right Arm Slotted Weights ($Q$)
60 g.wt
Observation Table
| # | Body | $P$ (g.wt) | $Q$ (g.wt) | $\theta$ (°) | Resultant $R$ | Error % |
|---|---|---|---|---|---|---|
| No records logged yet. Establish equilibrium and log. | ||||||
Parallelogram Law Equation:
R = √(P² + Q² + 2PQ cos θ)
Evaluated Weight $W$: -- g.wt
Error: 0.0%