Answer:
The density of the lead, ρ = 11.35 g /cm³
Explanation:
Given,
The mass of the lead, m = 567.5 g
The volume of the lead, v = 50 cm
The density is given by the relation
ρ = m / v
Substituting the given values in the above equation,
ρ = 567.5 g / 50 cm
= 11.35 g /cm³
Hence, the density of the lead, ρ = 11.35 g /cm³
8.16Kg
K.E= 1/2 mv²
102=1/2 m 5²
m=8.16 Kg
New moment of inertia will be
It is given initially angular velocity
Moment of inertia
Angular momentum is equal to
Now angular velocity is decreases to
As we know that angular momentum is conserved
So
So new moment of inertia will be