A Rectangular Beam with Semicircular Notches Has Dimen Sions $h = 160 \mathrm {~mm} \text { and } h _ { 1 } = 140 \mathrm {~mm}$

question 10

Multiple Choice

A rectangular beam with semicircular notches has dimen sions $h = 160 \mathrm {~mm} \text { and } h _ { 1 } = 140 \mathrm {~mm}$ maximum allowable bending stress in the plastic beam is $\sigma _ { \max } = 6.5 \mathrm { MPa }$

• A) 12 mm
• B) 20 mm
• C) 28 mm
• D) 32 mm

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