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

Determine magnitude of the couple, Determine magnitude of the couple: ...

Determine magnitude of the couple: A square block having each side 1.5 m is acted upon by system of forces along its sides as shown in the adjoining figure. If system reduces

Pulleys, what do you mean by law of belting and also explain the crowning o...

what do you mean by law of belting and also explain the crowning of pulleys ?

Sustained bending moment, Q. Sustained Bending Moment? When sustained b...

Q. Sustained Bending Moment? When sustained bending moments or axial thrust loadings are applied to the flanged joint during operation in sufficient magnitude to warrant consid

Design of the microprocessor control system, 1 Prepare a suitable system Me...

1 Prepare a suitable system Memory Map over the first 3K of memory, a suitable PIO configuration and associated Z80 PIO initialisation words in order to support a single electro-hy

Discover the maximum torque, Discover the maximum torque: Discover the...

Discover the maximum torque: Discover the maximum torque that may be transmitted by the shaft of 400 mm diameter, if the shear stress is not to exceed 50 N/mm 2 . Solution

How do you repair a hydraulic jack, In general, it seems easy: polishing sc...

In general, it seems easy: polishing scored cylinders and pistons, replacing worn seals, existing excessively worn or damaged parts, etc. Though, for an ordinary person, the proble

Thermodynamics, microscopic and macroscopic view points

microscopic and macroscopic view points

Relativity of simultaneity, Relativity of simultaneity Two events occur...

Relativity of simultaneity Two events occurring at different space co-ordinates x 1  and x 2  in an inertial frame S, are said to be simultaneous, if they occur at the same tim

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