Work = Force x DistanceWork = 400 x 4
Work = 1600 Nm
Work = 1600 Joules
Work = 1600 J
According to Newtons 3rd law, "Every action has an equal and opposite reaction". if you exert force on an object, the object will exert an equal and opposite force on you. when the forces exerted by you and the object balance a state of equilibrium is attained. however if you exert a force greater than the weight of the body, the body begins to move and work is done.
No the work done is still positive, the force exerted and the work done to exert that force is still the same. Its just that the other object is exerting more of a force on the object doing the work.
Work is sure done. For example, moving the arms to swim requires force - and the force is done over a distance.
To make an object start moving is called acceleration, and it is done by exerting force on that object.
-no work is done because the force and displacement are making an angle of 90 so whrere angle is 90 no work is done
According to Newtons 3rd law, "Every action has an equal and opposite reaction". if you exert force on an object, the object will exert an equal and opposite force on you. when the forces exerted by you and the object balance a state of equilibrium is attained. however if you exert a force greater than the weight of the body, the body begins to move and work is done.
No the work done is still positive, the force exerted and the work done to exert that force is still the same. Its just that the other object is exerting more of a force on the object doing the work.
The answer would depend on the units used for the force. Since these are not specified, it is not possible to answer the question.
No. Only if you are applying the same amount of force then there is no motion. If you are applying more force (the object is moving) then there is work being done.
10 J (novanet)
10 J (novanet)
Work is sure done. For example, moving the arms to swim requires force - and the force is done over a distance.
It depends on the magnitude of the force and the mass of the object
It depends on the magnitude of the force and the mass of the object
as work done is dot product of force and displacement so cos(90)=0;therfore work done is zero
To make an object start moving is called acceleration, and it is done by exerting force on that object.
-no work is done because the force and displacement are making an angle of 90 so whrere angle is 90 no work is done