Bench Setup: Horizontal Track, Wooden Block, Pulley & Pan
State: Static Equilibrium
$F\text{–}R$ Graph Plot ($\text{Slope} = \Delta F / \Delta R = \mu$)
Slope μ = --
Normal $R$
150.0 g.wt
Pan Load ($P$)
30.0 g.wt
Limiting $F_{\text{lim}}$
45.0 g.wt
Coeff. ($\mu$)
0.30
Horizontal Surface Material
Polished Wood (μ ≈ 0.30)
Mass on Wooden Block ($m_{\text{block}} = 150\text{ g}$)
R = 150.0 g.wt
Weights in Suspended Pan ($m_{\text{pan}} = 30\text{ g}$)
P = 30.0 g.wt
Observation Table
| # | Surface | Block $W$ (g.wt) | Normal $R$ (g.wt) | Limiting $F$ (g.wt) | $\mu = F / R$ |
|---|---|---|---|---|---|
| No records logged yet. Find limiting friction and log. | |||||
Law of Limiting Friction:
F ∝ R ⟹ F = μ R
Mean Coefficient of Friction $\mu$: --
Purity: Clean dry track