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

Refrigeration cycle, 1.5kw/ton of refrigeration is required to maintain tem...

1.5kw/ton of refrigeration is required to maintain temp of -40c in the refrigerator.if the cycle works on carnot cycle.determine 1.cop,2.sink temp 3. heat rejejected to the sink/to

Show space considerations for plant, Q. Show Space Considerations for plant...

Q. Show Space Considerations for plant? There are particular spacing constraints which need particular care and attention when optimizing the layout area utilization in both ne

Illustrate about the three authors of iges, Illustrate about the three auth...

Illustrate about the three authors of IGES In 1977, the three authors of The Initial Graphics Exchange Specification were recognized collectively for their contributions to the

Fatigue crack propagation, Fatigue crack propagation: If it is assumed...

Fatigue crack propagation: If it is assumed that no plastic deformation occurs around crack tip and law of fatigue crack propagation for place of above Example is da/dN =  10

How is rending stress designed in plain concrete footing, How is rending st...

How is rending stress designed in plain concrete footing? Rending Stresses Also design the plain concrete footing based on bending moment and shear considerations. In wall f

Evaluate the reactions at hinge and roller support, Evaluate the reactions ...

Evaluate the reactions at hinge and roller support: Q: A Force P = 5000N is applied at centre C of beam AB of length 5m as shown in figure given below. Find the reactio

Mesh-current method, how do we solve circuits using the mesh current method...

how do we solve circuits using the mesh current method

Press tools, Difference between press forminig and hammer forming

Difference between press forminig and hammer forming

Determine the shear stresses, A composite shaft consists of copper rod of 3...

A composite shaft consists of copper rod of 30mm diameter enclosed in a steel tube of external diameter 50mm and 10 mm thick. The shaft is needed to transmit a shaft is required to

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