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

Cost, why are future costs not always relevant?

why are future costs not always relevant?

Calculate the magnitudes of the force, The end gates of a lock are 5m high ...

The end gates of a lock are 5m high and when closed include an angle of 120 o . The width of the lock is 6.25 m. Each gate is carried on two hinged placed at the top and the bottom

Cylinder block-basic components of engine , Cylinder Block: This serves a...

Cylinder Block: This serves as an enclosure to the cylinder. The cylinder is an integral part of cylinder block in 100 cc motorcycle. Figure : Cylinder Block

Cell covers--battery components , Cell Covers: Each cell is covered from ...

Cell Covers: Each cell is covered from the top of the cell covers and the terminals projected from the cell covers. The terminals are arranged alternatively in a line.

MATLAB CODE, I NEED A GENERALIZED CODE FOR VAPOUR COMPRESSION REFRIGERATION...

I NEED A GENERALIZED CODE FOR VAPOUR COMPRESSION REFRIGERATION SYSTEM?

Find out the maximum and minimum bending stress in beam, Q.  A steel bar 10...

Q.  A steel bar 10 cm broad and 8 mm thick is subjected to bending moment. The radius of the neutral surface is 100 cm. Found out the maximum and minimum bending stress in beam.

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

what is relation between tool life and cutting speed?

Discover the torque on the shaft, Discover the torque on the shaft: A ...

Discover the torque on the shaft: A steel shaft transmits 105 kW at 160 rpm. If the shaft is 100 mm diameter, discover the torque on the shaft and the maximum shear stress ind

Determine the stress in composite bar, Determine the stress in composite ba...

Determine the stress in composite bar: How do you determine the stress in composite bar? What is Modular Ratio? Sol.: It becomes essential to have a compound tie or strut

Use of high temperature material flare tips, Q. Use of high temperature mat...

Q. Use of high temperature material Flare Tips? A variety of high temperature alloys (typically stainless steels and/or nickel-base alloys) are employed in the construction of

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