Question

In the case of a wire, having negligible mass suspended from ceiling and stretched under the action of a weight \(F\) suspended from its other end, the tension at any cross-section of the wire is

• A. Zero
• B. \(2F\)
• C. \(0.5F\)
• D. \(F\)

Hint:

In a massless string or wire under equilibrium, tension is uniform throughout the string. If a force \(F\) stretches it, the tension at every cross-section is \(F\).

Answer 1

The Correct Option is D

Step 1: Analyze forces on a massless wire.
A weight F hangs from the lower end; the wire has negligible mass. For equilibrium, upward tension must balance the downward weight.

Step 2: Apply equilibrium condition.
T – F = 0 → T = F. Since the wire is massless, tension is uniform throughout.

Step 3: Final Answer:
F.