1.A block, 1ft square and 9 inches deep floats on a stratified liquid composed of a 6in layer of waterabove a layer of mercury. Determine the weight of the block if the position of its bottom is 1 inchbelow the mercury.2. At point A in a pipeline carrying water, the diameter is 1m, the pressure is 98kPa and the velocity is1m/s. At point B, 2m lower than A, the diameter is 0.5m and the pressure is 20kPa. Determine thedirection of flow. Show detailed computation.3. What is the hydraulic radius of the channel shown:1.5m1.5h4.wtyA vertical right-angled triangularsurface has a vertex in the freesurface of a liquid. Find the forceon one side.1.5m1:2m

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Answered: Determine the weight of the block

Engineering

Civil Engineering

Determine the weight of the block

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

System of Forces

A force is an external influence or agent that changes the state of a system. According to Newton's second law, the force applied to a body is proportional to the change in momentum of a body. Hence, whenever a force is applied to a body, its momentum changes. If the body is at rest, under the action of force, its state of rest changes to motion. In other words, the magnitude of the momentum of the body changes from zero to a measurable value. Similarly, if the body possesses some initial velocity, it has some associated momentum, the effect of force can cause the body to halt or come to rest, that is, the momentum reduces to zero.

Question

1.
A block, 1ft square and 9 inches deep floats on a stratified liquid composed of a 6in layer of water
above a layer of mercury. Determine the weight of the block if the position of its bottom is 1 inch
below the mercury.
2. At point A in a pipeline carrying water, the diameter is 1m, the pressure is 98kPa and the velocity is
1m/s. At point B, 2m lower than A, the diameter is 0.5m and the pressure is 20kPa. Determine the
direction of flow. Show detailed computation.
3. What is the hydraulic radius of the channel shown:
1.5m
1.5h
4.
wty
A vertical right-angled triangular
surface has a vertex in the free
surface of a liquid. Find the force
on one side.
1.5m
1:2m

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