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

Evaluate resultant force on the bucket, A single jet pelton wheel runs at 3...

A single jet pelton wheel runs at 300 rpm under a head of 510 m. the jet diameter is 200m, its deflection inside the bucket is 165 o and its relative velocity is reduced by 15% be

Characteristics of the secondary circuit, Characteristics of the secondary ...

Characteristics of the secondary circuit The dimensions of the secondary circuit in secondary loop determine to a large extent, the performance of these machines. The secondary

Define the ideal surface roughness, Define the Ideal Surface Roughness ...

Define the Ideal Surface Roughness The ideal surface roughness represents the best possible finish which may be obtained for a given tool shape and can only be approached if bu

Voltage -fundamentals of electricity , Voltage: The voltage is the potent...

Voltage: The voltage is the potential difference between two points. The current flows from higher potential to lower potential. Voltage is measured in volts (V). V = IR

National supply and national demand curves, National supply and national de...

National supply and national demand curves: 1. Explain why neighboring countries tend to trade extensively with each other. 2. Use Table 1.1 to find the five most open econ

What is the pull required on brake arm to stop wheel, A simple band brake p...

A simple band brake performs on a drum of 600mm in diameter that is running at 200 r.p.m. The coefficient of friction is 0.25. The brake band has a contact at 270 o one end is fas

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