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

Potential deadlock, Suppose an interesting situation represented in followi...

Suppose an interesting situation represented in following figure (b). The Petri net somewhat shows a paradoxical situation. Intuitively we contain in our minds that by raising the

Car chassis corrosion, I have got a rusted chassis of a car.I wonder if you...

I have got a rusted chassis of a car.I wonder if you can estimate the remaining strength in a longitudial steel beam 6 cm wide x 12 height.

Physics, Ask question #Minimum 1010 words accepted#

Ask question #Minimum 1010 words accepted#

Virtual work, Explain the principle of virtual work

Explain the principle of virtual work

Mechanical properties of materials, A tensile test on a specimen having an ...

A tensile test on a specimen having an initial diameter of 13.11 mm and an initial gauge length of 200.0 mm, gave the following data:

Compute the intensity of normal stress - mohr circle, Compute the intensit...

Compute the intensity of normal stress: A uniform steel bar of 2 cm × 2 cm area of cross section is subjected to axial pull of 40000 kg. Compute the intensity of normal stres

Frames, Frames: You have been introduced to the analysis of frames. By...

Frames: You have been introduced to the analysis of frames. By going through this unit, you may identify frames and differentiate them from trusses. The method for analyzing f

Define the basic components of an n.c system, Define the Basic Components o...

Define the Basic Components of an N.C System The basic components of an N.C system are as follow: a) Programmer of Instruction: - It is a set of direction which will tell th

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