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

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:

Determine least value of work, Determine least value of work: Q . De...

Determine least value of work: Q . Determine least value of W as shown in the figure given below to keep the system of connected bodies in equilibrium µ for surface of c

Air transportation, AIR TRANSPORTATION: Air transportation has grown r...

AIR TRANSPORTATION: Air transportation has grown rapidly all over the world and in India too. Its main advantages are speed, good safety record, military use, ability to serve

Solids of mechanics, Derive the equation for pure bonding of beam (simply)

Derive the equation for pure bonding of beam (simply)

Engine oil replacement and top-up, Engine Oil Replacement and Top-up :   Th...

Engine Oil Replacement and Top-up :   The engine oil has to be changed at a periodic interval because after some point of time it loses its viscosity and cooling, anti rust, and se

Diploma.., Explain the point of contraflexure?

Explain the point of contraflexure?

Competency statements , COMPETENCY STATEMENT:  In this programme, every le...

COMPETENCY STATEMENT:  In this programme, every learner shall be assessed on a continuous basis for his/her knowledge and skills during the programme duration. Learners' competenc

Thermodynamics, describe equivalence of kelvin planck and clausious stateme...

describe equivalence of kelvin planck and clausious statement

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