Help me please A 5.00-kg particle moves from the origin to position C, having co
ID: 3892499 • Letter: H
Question
Help me please
A 5.00-kg particle moves from the origin to position C, having coordinates x = 5.50 m and y = 5.50 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 = ), calculate the work done by the gravitational force in going from O to C along the following paths, the purple path (OAC) The gravitational force acts downwards. The displacement in going from A to C is upwards. Does the gravitational force do positive or negative work during this displacement? the red path (ObC) You are correct that the work done for this path should be the same as the work done along the path from part (a) the blue path (OC) You are correct that the work done for this path should be the same as the work done along the path from part (a) The potential energy of a system of two particles separated by a distance r is given by the equation below, where A is a positive constant. Find the radial force that each particle exerts on the other. (Use any variable or symbol stated above as necessary.) and is pointing from the other particleExplanation / Answer
Work done by gravity in OAC = F . dr = F . (r_final -r intial)= ( -mg j) . (5.5 i + 5.5 j ) = - 5*9.8*5.5 = - 269.5 J
in paths OBC and OC as the final and intial points are same the work done is same.
radial force = - d U/d r = - d/dr ( A/ r ) = A / r^2
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