Work-power-energy, Mechanical Engineering

 

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)

Posted Date: 3/11/2013 1:55:51 AM | Location : United States







Related Discussions:- Work-power-energy, Assignment Help, Ask Question on Work-power-energy, Get Answer, Expert's Help, Work-power-energy Discussions

Write discussion on Work-power-energy
Your posts are moderated
Related Questions
Find out the recoil-velocity of the gun: As shell of mass 200 gm is fired at a velocity of 50 metres/second by a gun of mass 20 kg. Find out the recoil-velocity of the gun.

INTRODUCTIO : In Motorcycle Servicing, we studied about servicing of a motorcycle. Here, you will study about the detailed procedures for motorcycle service and maintenance. The s

State the postulates of special theory of relativity and deduce from them the Lorentz transformations. Define an inertial frame of reference and derive the Lorentz transformatio

For a theoretical OTTO cycle operating on compression ratio of 8.5:1taking in air at 15C and 101.3kPa and having a maximum cycle temp of 1800C.Calculate the temp after compression,

I require design procedure of Conjugate Cams

For the collapse loads indicated in Figure Q3, find the required plastic moment of resistance (M p ). The frame members have varying plastic moments of resistance as indi

What is the difference between von-mises and maximum principal stress? What is axisymmetric, plane stress, and plane strain modeling? What is difference between a beam, spar,

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

Q. Design Air Coolers for plant layout? As air coolers (sometimes called aerial coolers, or fin-fans) have extensive heat transfer surfaces, they are more vulnerable to failure

In a steam jet refrigeration system, the ejector extracts 3.3 m3/s of saturated water vapor at a temperature of 7.2 °C from the flash chamber. The return water from the cooling coi