Question

please answer please please

Answer 1

Given that, two Sphere each of  volume 250 c.c but of  density 800 kg/m³  and  1200 kg/m³ are  connected  by a string  and the combination is  immersed in a  liquid

Let the  mass of  spheres  be  m₁ and  m₂ Having density 800 kg/m³ and 1200kg/m³ respectively.

Volume of  Spheres = 250 cm³ = 250 × 10⁻⁶ m³

Now,

We  know that ,

mass = density × volume

m₁ = 250 × 10⁻⁶ × 800

m₂ = 250 × 10⁻⁶  × 1200

If  there  is  a  tension in the string, then this  is surely due to that masses m₁ and m₂ are  applying  the force  in oppsite directions,

Force Applied  by mass m₁  = m₁g

Force Applied  by mass m₂ = m₂g

Hence,

Tension in the  string,

T = m₂g - m₁g

T =  g(m₂ - m₁)

T = g{(250 ×10⁻⁶×1200)-(250 ×10⁻⁶×800)}

T = 9.8×250×10⁻⁶(1200-800)

T = 9.8×250×10⁻⁶×200

T = 9.8×25×2×10⁻³

T = 0.49N