Question

D U LULUI LUULISILY 3. A 100 N rectangular box has dimensions 50 cm x 20 cm x 20 cm. If the box is placed on a horizontal table, calculate the (a) lowest pressure and (b) highest pressure that the box can exert on the table. Attach File

Answer 1

Ginen, a Rectangular box of weight loon having dimensions 50 cm x 20cm x 20cm. l=50cm b=room h=20cm W. KT Preasure Force Area → an this case, force applied on a horiz- -antal table is equal to the weight of the Rectangular bon Force = weight = F = WOON For area, we can two possibilities (A - 20x20 cm) A₂ = 20 x 20 cm²

position (1) If the block is placed such that bf it's base area A = 50x20 cm2 UT A = 10 cm clox (162) m2 (Base ares) A = olm? preasure Pi in this position is norr P. F/A, = 100 m² TP EloBall mat i puci tion les n af the block is placed such that it's base area A = 20x20cm ² A2 = 4 x 10 cm² = 4x10x104 m² A = 0.04m² preasure Pe in this position is a P2 = F/A = 100 . 00u = 2.5x 103 N/m2 [P₂ = to 2.5x103 Nimet

from Epů, and fq dig P, = 103 N/m2 P2 = 2.5X118 m2 (a) as TP₂ > P, * The lowest preasure possible is P = 10 N/m2 b) as LP>PI * The highest preasure [P2 = 2.5*10² Alma l possible is