A bar is subjected to equal and opposite forces as shown in the figure. PQ is a plane making an angle θ with the cross-section of the bar. If the area of cross-section be 'a', then what is tensile stress on PQ?
A
Fa
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Fcosθa
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Fcos2θa
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
aFcosθ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is DFcos2θa The force acting on the given plane will be Fcosθ Also, the effective area along which the force acts is given by acosθ Thus tensile strength on plane PQ will be: NormalForceArea=Fcosθa/cosθ=Fcos2θa