A wire can sustain a weight of 15 kg. If it cut into four equal parts, then each part can sustain a weight

Question

A wire can sustain a weight of 15 kg. If it cut into four equal parts, then each part can sustain a weight (A) 5 kg (B) 45 kg (C) 15 kg (D) 30 kg

Tardigrade Admin · Accepted Answer

Stress =(F/A) So Stress propto (1/A) Since, we are not reducing the cross sectional area of the wire. Therefore each part can still sustain same force i.e, 15 kg weight.

Q. A wire can sustain a weight of $15 k g$ . If it cut into four equal parts, then each part can sustain a weight

5 kg

45 kg

15 kg

30 kg

Stress $= \frac{F}{A}$
So Stress $\propto \frac{1}{A}$
Since, we are not reducing the cross sectional area of the wire.
Therefore each part can still sustain same force
i.e, $15 k g$ weight.

Q. A wire can sustain a weight of 15kg. If it cut into four equal parts, then each part can sustain a weight