I need help with number 68. Thank You Use the data given in the appendices to co

Question

I need help with number 68. Thank You

Use the data given in the appendices to compute the total of the magnitudes of the angular momenta of all the planets owing to their revolution about the Sun. What fraction of this total is associated with the planet Jupiter? What is the net torque about the origin on a flea located at coordinates In He. 12-59. a constant horizontal force of 12 N is applied a uniform solid cylinder by fishing line wrapped around the cylinder. The mass of the cylinder is 10 kg, its radius is 0.10 m the cylinder rolls smoothly on the horizontal surface What the magnitude of the acceleration of the center of mass of the cylinder? What is the magnitude of the angular acceleration of cylinder about the center of mass? What are the magnitude

Explanation / Answer

Given

Position coordinates = ( 0, -4.0 , 5.0)

Forces acting on the flea are F1 = (3.0 N) k

                                           F2 = (-2.0 N) j

The position vector , r = ( 0 i - 4.0 m j +5.0 m k)

Net force acting on the flea are    F = F1 + F2

                                                      = (3.0 N ) k + (-2.0N ) j

                                                  F = ( 0 i - 2.0 N j + 3.0 N K)  

The net torque acting on the flea is

                                              = r * F

                                                = ( 0 i - 4.0 m j +5.0 m k) * ( 0 i - 2.0 N j + 3.0 N K)

                                                = i( -12+10) -j (0) + k(0)

                                            = - 2i Nm

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