Work-power-energy, Mechanical Engineering

Assignment Help:

 

Under the action of constant force, a 2kg block moves such that its position x as a function of time is given by X=t^3/3 ,where x in meters and t in sec , the workdone by force in first 2 seconds is

A 26.6 j

B 3.3 j

C 16 j

D 32 j

Solution) v=dx/dt=t^2,a=dv/dt=2t,f(t)=ma(t),w=∫f(t)*v(t) dt (from x=0 to x=2 sec)


Related Discussions:- Work-power-energy

Evaluate the stress in the bolt, (a) A steel bolt 650 mm 2 cross-sectional...

(a) A steel bolt 650 mm 2 cross-sectional area passes centrally through a copper tube to 1200mm 2 cross-sectional area. The tube is 500mm long and closed by rigid washers, which

Material selection for insulation in personnel protection, Q. Material Sele...

Q. Material Selection for Insulation in Personnel Protection? Material for 15ºC to 650ºC temp range is Calcium Silicate (ASTM C533, Type 1), Manville Thermo-12 or approved equi

Electron beam welding process and its applications, ELECTRON BEAM WELDING P...

ELECTRON BEAM WELDING PROCESS AND ITS APPLICATIONS   Electron Beam Welding (EBW) is one of the advanced welding technologies required for the precision welding applications

Define the process of step community, Define the process of STEP community ...

Define the process of STEP community The STEP community is in the process of defining and standardizing a number of domain-specific (mechanical or electrical) Application Proto

Disc clutch friction thickness, Disc clutch friction thickness: Check disc...

Disc clutch friction thickness: Check disc clutch friction thickness which should be minimum of 2.6 mm.

Marshalling yard, Marshalling Yard: Function The marshalling ...

Marshalling Yard: Function The marshalling yard is a facility where goods wagons are sorted out for being dispatched to different stations. After being sorted out, th

Show the vessel internals, Q. Show the vessel internals? Functional des...

Q. Show the vessel internals? Functional design of trays and other removable internals are outside the scope of this document. Removable internals shall be sized to pass thr

Low resistance or very high current in primary coil circuit, If Low Resista...

If Low Resistance or Very High Current in Primary Coil Circuit Causes of Problem Remedy Primary ignition coil short circuited

What are the advantages and disadvantages of induction motor, What are the ...

What are the advantages and disadvantages of induction motors? A coil of 500 turns is linked by a ?ux of 0.4 mWb. If the ?ux is reversed in 0.01 second, ?nd the e.m.f induced i

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