Question

alue Based
0. Construction for metro line was carried out day and night. One night, when the work done was in full swing,
suddenly chain of the crane, lifting a heavy concrete block snapped and it fell down. Immediately people from
nearby area came for help. They lifted the concrete and saved many lives. Injured were transferred to hospital
without waiting for police to arrive.
(a) What values of local people helped in saving people?
(b) A crane having steel is used to lift heavy loads upto 10-kg. The elastic limit for steel is 3x10 Nm? What
should be the radius of the steel rope used?
(DPS) (3 marks)
umerical (For values of different modulus of rigidity refer textbook​

Answer 1

Answer:

a.helping nature,kind, humanity

Explanation:

I thought that this will help you

Answer 2

Answer:

a) Helping nature,kind, humanity

b) 3.24mm

Explanation:

b) Ultimate stress= Load/Area

3×10^8=10^8=10x1000/Area

Area=0.33×10^-4

d=0.648×10^-2

d=6.48 mm

Radius=3.24mm