Question

a spherical ball of radius is 2.5 cm and mass of 15 will the ball sink or float density of water is 1g/ml​

Answer 1

I have attached the answer here

Answer 2

The ball will sink in water.

Given:-

Radius of spherical ball = 2.5cm

Mass of ball = 15kg

Density of water = 1g/ml

To Find:-

The ball will sink or float on water.

Solution:-

We can easily find out that the ball will sink or float on water by using these simple steps.

As

Radius of spherical ball (r) = 2.5cm

Mass of ball (m) = 15kg = 15000g

Density of water (d') = 1g/ml

Density of ball (d) =?

Here, first we need to find out the density of the ball.

So according to the formula

$density = \frac{mass}{volume}$

$d = \frac{m}{v}$

$d = \frac{15000}{ \frac{4}{3}\pi {r}^{3} }$

$d = \frac{15000}{ \frac{4}{3} \times 3.14 \times {2.5}^{3} }$

on solving we get,

$d = \frac{15000}{65.42}$

$d = 229.29$

Now, according to the case

if density of water > density of ball then ball will float

and if density of water < density of ball then ball will sink

Here, density of water < density of ball

Hence, The ball will sink in water.

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