A 7.00-kg particle moves from the origin to position C, having coordinates x = 4

Question

A 7.00-kg particle moves from the origin to position C, having coordinates x = 4.50 m and y = 4.50 m as shown in the figure. One force on the particle is the gravitational force acting in the negative y direction.

A 7.00-kg particle moves from the origin to position C, having coordinates x = 4.50 m and y = 4.50 m as shown in the figure. One force on the particle is the gravitational force acting in the negative y direction. Using the equation (W=F?rcos?=F arrow??r ), calculate the work done by the gravitational force in going fromOtoCalong the following paths. (a) the purple path (OAC) J (b) the red path (OBC) J (c) the blue path (OC) J (d) Your results should all be identical. Why?

Explanation / Answer

a)F.dr=mgsin45*4.5/sin45=309.015J----------- b)F.dr=mg*4.5=309.015=c)F.dr=mg*4.5=309.015

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