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

Try square-measuring tools , Try Square: It has two straight edge arms at ...

Try Square: It has two straight edge arms at the angle of 90 degree and it is used to check the perpendicularity. A try square is shown in Figure. Figure: Try Square

Calculate the cutting speed in drilling operation, Calculate the Cutting Sp...

Calculate the Cutting Speed in Drilling Operation Calculate the cutting speed if a drill of 0.04 m dia is operated at a speed of 250 rpm. Solution D = 0.04 m N = 25

Calculate the natural frequency of the system, (a) A mass of 1 kg is to be ...

(a) A mass of 1 kg is to be supported on a spring having a stiffness of 9800N/m. The damping coefficient is 5.9 N-sec/m. Calculate the natural frequency of the system. Determine al

Determine the stresses in the shell, Determine the stresses in the shell: ...

Determine the stresses in the shell: A cylindrical boiler is 2.5 m in diameter and 20 mm in thickness and it carries steam at a pressure of 1.0 N/mm2. Determine the stresses i

Refractory, extraction of refractories

extraction of refractories

Construct a plain scale, Construct a plain scale: The distance between...

Construct a plain scale: The distance between Indore and Bhopal is 180 kilometer. It is represented on the map via 9 centimeter. Construct a plain scale for such map, illustra

Explain chisel edge angle - angle of drills, Normal 0 false f...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Determine the edge table, Determine the Edge Table Each entry in the ed...

Determine the Edge Table Each entry in the edge table contains those information mentioned earlier, edge name, start vertex and end vertex, left face and right face, the predec

Steam , how to calculate the volume of HFO burn to produice steam?

how to calculate the volume of HFO burn to produice steam?

#title.cutting tool life, what is relation between tool life and cutting sp...

what is relation between tool life and cutting speed?

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