MCQ
A wire can sustain the weight of 20kg before breaking. If the wire is cut into two equal parts, each part can sustain a weight of.
- A10kg
- ✓20kg
- C40kg
- D80kg.
✓
Answer
Correct option: B.
20kg
As the wire is cut into two equal parts, both have equal cross-sectional areas. Therefore, a weight of 20kg exerts a force of 20g on both the pieces Breaking stress depends upon the material of the wire.
Since 20g of force is exerted on wires with equal cross-sectional areas, both the wires can sustain a weight of 20kg.
Since 20g of force is exerted on wires with equal cross-sectional areas, both the wires can sustain a weight of 20kg.
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