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

What do you mean by heat transfer, What do you mean by Heat Transfer ? Comp...

What do you mean by Heat Transfer ? Compare (i) Work done with Heat Transfer (ii) Thermodynamics with Heat Transfer. State whether Heat Transfer is a path function or state functio

Engineering mechanics, difference between coplanar and noncoplanar force sy...

difference between coplanar and noncoplanar force system

Thermodynamics assignment, The steam that leaves the super-heater is expand...

The steam that leaves the super-heater is expanded from 130bar at 535°C to 25.2bar at 310°C in a high pressure turbine. The steam from the exit of the HP turbine is reheated to 535

Motion of a solid particle, With the aid of a sketch, describe the motion o...

With the aid of a sketch, describe the motion of a solid particle settling in a liquid and discuss the effect on it of applying a centrifugal force. Define the terms Separating

Find minimum thickness, A 1.2 m diameter steel pipe carries oil of relative...

A 1.2 m diameter steel pipe carries oil of relative density 0.822 under a head of 70 m of oil. What minimum thickness of 120 MPa (yield stress) steel would be required for a safety

Determine couple - homogeneous cylinder, Determine couple - Homogeneous cyl...

Determine couple - Homogeneous cylinder: Homogeneous cylinder having weight W rests on horizontal floor in contact with wall (Fig ure given below ). If the coefficient of

Polymerization, Polymerization Whether similar molecules join in long ...

Polymerization Whether similar molecules join in long chain is termed as polymerization and resulting outcome is a polymer in a chemical reaction. Each plastic are polymers. T

Orthographic assembly drawing, Orthographic assembly drawing: On MyUni...

Orthographic assembly drawing: On MyUni (and shown above)  there is a figure of a small  partially assembled single-cylinder 2-stroke engine  that you need  to model. Drawings

Understanding the role of ownership, Understanding the Role of Ownership : ...

Understanding the Role of Ownership : Before starting a business, entrepreneur should know what is involved in owning a business and what are the roles one will have to play to st

Define the boundary representation of solids, Define the Boundary Represent...

Define the Boundary Representation of solids Boundary model or b-rep model is based on the topological notion that a physical object is bounded by a set of faces. These faces a

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