# 46 - Mechanics Part 2 Questions Answers

Dear Sir kindly help provide the solution along with right approach to solve such questions

Joshi sir comment
Joshi sir comment

On a horizontal floor, two identical cylindrical vessels A and B connected by a thin tube near their bottoms contain some water. When an ice block of volume 100cm^3 is gently put inside the vessel A, it gets half submerged in the water. How much mass of water will flow through the connecting tube during the process of melting of the ice cube? (Density of water=1000kg/m^3 and Density of ice=900kg/m^3)

Joshi sir comment
Joshi sir comment
Joshi sir comment

Due to inner sphere attraction, outer sphere contracts so it is compressive stress.

Joshi sir comment

By Bernoullis theorem, velocity of water jet = $\sqrt{2gh}$Water jet comes out perpendicular to surface.

make its horizontal and vertical components

By vertical component, calculate time, then use it with

horizontal velocity component to get distance along x axis

Finally calculate distance from centre, along x axis

Inform for any confusion

Joshi sir comment
Physics >> Mechanics Part 2 >> Elasticity Medical Exam

A solid sphere is subjected to uniform pressure from all direction. The ratio of volumetric strain to lateral strain produced in it, is

Joshi sir comment

V = 4/3 πr3

so dV = 4πr2

now calculate dV/V

Physics >> Mechanics Part 2 >> Elasticity Medical Exam

What is the length of a wire whose density is 8 g/cm3, which suspended vertically, would break due to its own weight? [Breaking stress of wire is 2.4 x 108 N/m2]