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

Arc spot welding, Arc Spot Welding In this process, coalescence at the...

Arc Spot Welding In this process, coalescence at the overlapping surfaces is produced in one spot by heating with an electric arc between an electrode and the work. The weld i

Calculate the internal pressure, A pressure vessel is to be treated to ge...

A pressure vessel is to be treated to generate compressive residual stresses on it inner surface. This involves increasing the pressure until taking 75% of the wall thickness goe

Dynamic movement in polar coordinates, You are required to investigate the ...

You are required to investigate the dynamic movement of a mass m sliding along a rod as shown in the diagram below. The rod is rotating at a constant angular velocity θ. The mass

Bending equation, State and define the bending equation and mention it''s u...

State and define the bending equation and mention it''s units and derive it

Heat content , is it correct tosay tha the heat content of the system is 5 ...

is it correct tosay tha the heat content of the system is 5 kv.

Explain the automation in machining, Explain the Automation in Machining? ...

Explain the Automation in Machining? The word "automatic" is derived from Greek and it means "self-moving or "self thinking". The word "automation" has been used to refer to a

Illustrate the cad interface, CAD*I Interface The CAD*I interface was d...

CAD*I Interface The CAD*I interface was developed within the framework of the ESPRIT Project 322 of the European Commission. The project was started in 1985 and had duration of

Properties of aluminium alloys, Properties of Aluminium Alloys: Among...

Properties of Aluminium Alloys: Among the different properties of aluminium alloys given are notable as: (a) Low density as 2.7 gm/cc (b) Elevated electrical and therma

Determine the processing time of iges, Determine the Processing Time of IGE...

Determine the Processing Time of IGES File Size/Processing Time: IGES was heavily criticized for requiring large files that took hours or even days to parse, given the averag

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