Evaluate the speed of train, Mechanical Engineering

Assignment Help:

Evaluate the speed of train:

A train of mass 200KN has frictional resistance of 5N per KN. Speed of train, at the top of an inclined of 1 in 80 is 45 Km/hr. Find speed of train after running down the incline for 1Km.

Sol: Given,

Mass m = 200KN, Frictional resistance Fr  = 5N/KN, sin   = 1/80 = 0.0125,

Initial velocity u = 45Km/hr = 12.5m/sec, s = 1km = 1000m

The total frictional resistance = 5 X 200 = 1000N   = 1KN                                                                     ...(i)

Force responsible for sliding = Wsinθ   = 200 X 0.0125 = 2.5KN

Net force, F = F - Fr  = ma

2.5 - 1 = (200/9.81)a

a = 0.0735 m/sec2                                                                                                                                     ...(ii)

Apply equation, v2 = u2  + 2as

v2 = 0 + 2 X 0.0735 X 1000

v = 12.1 m/sec                                                                 .......ANS

 


Related Discussions:- Evaluate the speed of train

Define power metallurgy, Power Metallurgy- The more appropriate name shoul...

Power Metallurgy- The more appropriate name should be "Particulate Processing Methods". Here the particles of various sizes of metals, ceramics, polymers and glass etc, are presse

Types of holons, Types of Holons The four major types of holons are: ...

Types of Holons The four major types of holons are: Order holons Product holons Resource holons Staff holons Considering the cooperative aspect of the

Copper and its production, Copper And Its Production Copper is marked ...

Copper And Its Production Copper is marked via a host of good engineering properties. The foremost is copper's good electrical conductivity and bulk of copper is utilized as e

Due diligent, Due Diligent:   There are many literatures on sand blast...

Due Diligent:   There are many literatures on sand blasting and manufacturing processes. Historically, sand blasting had been used for many tasks before. It was pretty famous

Annotation with leaders, Annotation with Leaders Ordinate dimensions ar...

Annotation with Leaders Ordinate dimensions are not really an dimensions at all in that they do not indicate a measurement.They annotate known as a co-ordinate points. The DIMO

Plate clutch lifter bolts for even tightening, Plate clutch lifter bolts fo...

Plate clutch lifter bolts for even tightening : Reset clutch assembly using plate lifter clutch alignment tool.

What is the spindle and drill, What is the spindle and drill The spindl...

What is the spindle and drill The spindle and drill head assembly the taper hole can be create on radial drilling machine with some special attachment likewise quill(The spindl

Pressure, relation between fluid pressure and velocity

relation between fluid pressure and velocity

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd