Constants Mass M is distributed uniformly over a disk of radius a. Part A Find the gravitational force (magnitude and direction) between this disk-shaped mass and a particle with mass m located a distancez above the center of the for the gravitational force due to GMmz disk (the figure (Figure 1)) .(Hint: Divide the disk into infinitesimally thin concentric rings, use the expression F= each ring of radius r, and integrate to find the total force.) Express your answer terms of a, G, M, m, z. F = Submit Request Answer Next > Figure 1 of 1 Provide Feedback

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Central Force

Central force is the force that acts along the center of mass of one body to the center of mass of another body. Its direction from or away from a point on a body to another is called the center of the force. Such forces include gravitational force between two massive objects or electrostatic forces between two charged particles. So from atoms to planets, the central forces play an important role in shaping our daily lives. One of the remarkable features of central forces is that they are conservative, i.e. the total energy of a central force system can always be expressed as a gradient of a potential energy function.