Use the values RE = 6370 km = 3960 mi for the radius of the earthThe 1-kg slider 4 is push...

Use the values RE = 6370 km = 3960 mi for the radius of the earth

The 1-kg slider 4 is pushed along the curved bar by the slotted bar. The curved bar lies in the horizontal plane, and its profile is described by r = 2(θ/2π + 1) m, where θ is in radians. The angular position of the slotted bar is θ = 2t rad. Determine the polar components of the total external force exerted on the slider when θ = 120º.