A bolt is made to pass through a tube and both of them are tightly fit...
Answer option is pretty self explanatory.
As we tighten the nut, the nut pulls the bolt(hence tensile force) and pushes on the tube (compressive force).
A bolt is made to pass through a tube and both of them are tightly fit...
Given:
A bolt is made to pass through a tube and both of them are tightly fitted with the help of washers and nuts.
Explanation:
When the nut is tightened, it applies a force on the bolt and tube assembly. This force can be either compression or tension depending on the arrangement and application. Let's analyze the possibilities:
A. Bolt and tube are under tension:
If the nut is tightened, it will pull the bolt and tube towards each other. This will create tension in both the bolt and the tube. However, this is not a common arrangement as it may not provide a secure fit.
B. Bolt and tube are under compression:
If the nut is tightened, it will push the bolt and tube away from each other. This will create compression in both the bolt and the tube. However, this is also an unlikely arrangement as it may cause the bolt and tube to loosen over time.
C. Bolt is under compression and tube is under tension:
If the nut is tightened, it will push the bolt away from the tube, creating compression in the bolt. At the same time, it will pull the tube towards the bolt, creating tension in the tube. This is a more common arrangement as it ensures a secure fit between the bolt and tube.
D. Bolt is under tension and tube is under compression:
If the nut is tightened, it will pull the bolt towards the tube, creating tension in the bolt. At the same time, it will push the tube away from the bolt, creating compression in the tube. This arrangement is less common as it may cause the bolt and tube to loosen over time.
Conclusion:
Based on the given options, it can be concluded that the correct answer is D. When the nut is tightened, the bolt is under tension and the tube is under compression.