Friday

July 25, 2014

July 25, 2014

Posted by **Technoboi11** on Friday, March 2, 2007 at 12:23am.

For Further Reading

* Physics/Math - bobpursley, Thursday, March 1, 2007 at 6:27am

Work is the dot product of Force and displacement.

Change in displacement is r2 minus r1. I will be happy to critique your work on this.

Rememeber dot product is a scalar, the sum of i component times i component plus j component times j component etc.

>>>>>>>>>>>>>>>>>>>>>>>>>>>

Here is what I did:

W1=integral of Fxdx = integral (3.1x)dx

= 1.55x^2 evaluated at x2=-4.9 and x1=2.1.

= [(1.55(-4.9)^2)-(1.55(2.1)^2)]

= 30.38 J

W2=integral of Fydy = integral (3.1)dy

= 3.1[(-3.9)-(2.5)]

= -19.84 J

Wnet = W1+W2

Wnet = 30.38-19.84

Wnet = 11 J

Is this correct???

**Related Questions**

Physics/Math - What work is done by a force (in newtons) F = 3.1xi + 3.1j, with ...

Physics/Math - What work is done by a force (in newtons) F = 3.1xi + 3.1j, with ...

General Physics - A force Fx acts on a particle. The force is related to the ...

physics - a particle is subject to a force fx that varies with a position shown ...

Physics - The force on a particle is directed along an x axis and given by F = 1...

Physics - A single conservative force acts on a 5.00 kg particle. The equation ...

physics - A particle moves along the axis under the influence of a variable ...

physics - A particle moves along the axis under the influence of a variable ...

Integrated Physics and Science - A crowbar is used as a lever. The effort force ...

physics - 1)If I am to plot a graph of Force in Newtons vs. Stretch in meters, ...