{
 "assumptions": {
  "mu": 0.3,
  "tap_direction": "normal to screen, into the screen",
  "phones": [
   "large 80x168x11, 240 g",
   "small 65x140x7, 140 g"
  ],
  "mass_cases": {
   "100% infill": 1.0,
   "est. 50% of solid mass": 0.5
  }
 },
 "cases": [
  {
   "position": "video",
   "angle": 70.0,
   "phone": "large 80x168x11, 240 g",
   "mass_case": "100% infill",
   "total_mass_g": 481.7,
   "cg_y_mm": 48.1,
   "cg_inside_footprint": true,
   "taps": [
    {
     "tap_at_frac_of_phone_height": 0.25,
     "tap_height_above_desk": 73.6,
     "tip_back_force_N": 3.78,
     "slide_force_N_mu0.3": 1.69,
     "mu_needed_for_1N_tap": 0.19
    },
    {
     "tap_at_frac_of_phone_height": 0.5,
     "tap_height_above_desk": 113.0,
     "tip_back_force_N": 2.05,
     "slide_force_N_mu0.3": 1.69,
     "mu_needed_for_1N_tap": 0.19
    },
    {
     "tap_at_frac_of_phone_height": 0.75,
     "tap_height_above_desk": 152.5,
     "tip_back_force_N": 1.41,
     "slide_force_N_mu0.3": 1.69,
     "mu_needed_for_1N_tap": 0.19
    },
    {
     "tap_at_frac_of_phone_height": 0.95,
     "tap_height_above_desk": 184.1,
     "tip_back_force_N": 1.12,
     "slide_force_N_mu0.3": 1.69,
     "mu_needed_for_1N_tap": 0.19
    }
   ]
  },
  {
   "position": "video",
   "angle": 70.0,
   "phone": "large 80x168x11, 240 g",
   "mass_case": "est. 50% of solid mass",
   "total_mass_g": 360.9,
   "cg_y_mm": 49.1,
   "cg_inside_footprint": true,
   "taps": [
    {
     "tap_at_frac_of_phone_height": 0.25,
     "tap_height_above_desk": 73.6,
     "tip_back_force_N": 2.76,
     "slide_force_N_mu0.3": 1.27,
     "mu_needed_for_1N_tap": 0.24
    },
    {
     "tap_at_frac_of_phone_height": 0.5,
     "tap_height_above_desk": 113.0,
     "tip_back_force_N": 1.5,
     "slide_force_N_mu0.3": 1.27,
     "mu_needed_for_1N_tap": 0.24
    },
    {
     "tap_at_frac_of_phone_height": 0.75,
     "tap_height_above_desk": 152.5,
     "tip_back_force_N": 1.03,
     "slide_force_N_mu0.3": 1.27,
     "mu_needed_for_1N_tap": 0.24
    },
    {
     "tap_at_frac_of_phone_height": 0.95,
     "tap_height_above_desk": 184.1,
     "tip_back_force_N": 0.82,
     "slide_force_N_mu0.3": 1.27,
     "mu_needed_for_1N_tap": 0.24
    }
   ]
  },
  {
   "position": "video",
   "angle": 70.0,
   "phone": "small 65x140x7, 140 g",
   "mass_case": "100% infill",
   "total_mass_g": 381.7,
   "cg_y_mm": 46.3,
   "cg_inside_footprint": true,
   "taps": [
    {
     "tap_at_frac_of_phone_height": 0.25,
     "tap_height_above_desk": 65.6,
     "tip_back_force_N": 3.65,
     "slide_force_N_mu0.3": 1.34,
     "mu_needed_for_1N_tap": 0.23
    },
    {
     "tap_at_frac_of_phone_height": 0.5,
     "tap_height_above_desk": 98.5,
     "tip_back_force_N": 2.01,
     "slide_force_N_mu0.3": 1.34,
     "mu_needed_for_1N_tap": 0.23
    },
    {
     "tap_at_frac_of_phone_height": 0.75,
     "tap_height_above_desk": 131.4,
     "tip_back_force_N": 1.38,
     "slide_force_N_mu0.3": 1.34,
     "mu_needed_for_1N_tap": 0.23
    },
    {
     "tap_at_frac_of_phone_height": 0.95,
     "tap_height_above_desk": 157.7,
     "tip_back_force_N": 1.11,
     "slide_force_N_mu0.3": 1.34,
     "mu_needed_for_1N_tap": 0.23
    }
   ]
  },
  {
   "position": "video",
   "angle": 70.0,
   "phone": "small 65x140x7, 140 g",
   "mass_case": "est. 50% of solid mass",
   "total_mass_g": 260.9,
   "cg_y_mm": 46.8,
   "cg_inside_footprint": true,
   "taps": [
    {
     "tap_at_frac_of_phone_height": 0.25,
     "tap_height_above_desk": 65.6,
     "tip_back_force_N": 2.46,
     "slide_force_N_mu0.3": 0.92,
     "mu_needed_for_1N_tap": 0.32
    },
    {
     "tap_at_frac_of_phone_height": 0.5,
     "tap_height_above_desk": 98.5,
     "tip_back_force_N": 1.35,
     "slide_force_N_mu0.3": 0.92,
     "mu_needed_for_1N_tap": 0.32
    },
    {
     "tap_at_frac_of_phone_height": 0.75,
     "tap_height_above_desk": 131.4,
     "tip_back_force_N": 0.93,
     "slide_force_N_mu0.3": 0.92,
     "mu_needed_for_1N_tap": 0.32
    },
    {
     "tap_at_frac_of_phone_height": 0.95,
     "tap_height_above_desk": 157.7,
     "tip_back_force_N": 0.75,
     "slide_force_N_mu0.3": 0.92,
     "mu_needed_for_1N_tap": 0.32
    }
   ]
  },
  {
   "position": "reading",
   "angle": 55.0,
   "phone": "large 80x168x11, 240 g",
   "mass_case": "100% infill",
   "total_mass_g": 481.7,
   "cg_y_mm": 52.5,
   "cg_inside_footprint": true,
   "taps": [
    {
     "tap_at_frac_of_phone_height": 0.25,
     "tap_height_above_desk": 71.5,
     "tip_back_force_N": 6.3,
     "slide_force_N_mu0.3": 2.19,
     "mu_needed_for_1N_tap": 0.15
    },
    {
     "tap_at_frac_of_phone_height": 0.5,
     "tap_height_above_desk": 105.9,
     "tip_back_force_N": 2.44,
     "slide_force_N_mu0.3": 2.19,
     "mu_needed_for_1N_tap": 0.15
    },
    {
     "tap_at_frac_of_phone_height": 0.75,
     "tap_height_above_desk": 140.3,
     "tip_back_force_N": 1.52,
     "slide_force_N_mu0.3": 2.19,
     "mu_needed_for_1N_tap": 0.15
    },
    {
     "tap_at_frac_of_phone_height": 0.95,
     "tap_height_above_desk": 167.8,
     "tip_back_force_N": 1.16,
     "slide_force_N_mu0.3": 2.19,
     "mu_needed_for_1N_tap": 0.15
    }
   ]
  },
  {
   "position": "reading",
   "angle": 55.0,
   "phone": "large 80x168x11, 240 g",
   "mass_case": "est. 50% of solid mass",
   "total_mass_g": 360.9,
   "cg_y_mm": 55.3,
   "cg_inside_footprint": true,
   "taps": [
    {
     "tap_at_frac_of_phone_height": 0.25,
     "tap_height_above_desk": 71.5,
     "tip_back_force_N": 4.35,
     "slide_force_N_mu0.3": 1.64,
     "mu_needed_for_1N_tap": 0.2
    },
    {
     "tap_at_frac_of_phone_height": 0.5,
     "tap_height_above_desk": 105.9,
     "tip_back_force_N": 1.69,
     "slide_force_N_mu0.3": 1.64,
     "mu_needed_for_1N_tap": 0.2
    },
    {
     "tap_at_frac_of_phone_height": 0.75,
     "tap_height_above_desk": 140.3,
     "tip_back_force_N": 1.05,
     "slide_force_N_mu0.3": 1.64,
     "mu_needed_for_1N_tap": 0.2
    },
    {
     "tap_at_frac_of_phone_height": 0.95,
     "tap_height_above_desk": 167.8,
     "tip_back_force_N": 0.8,
     "slide_force_N_mu0.3": 1.64,
     "mu_needed_for_1N_tap": 0.2
    }
   ]
  },
  {
   "position": "reading",
   "angle": 55.0,
   "phone": "small 65x140x7, 140 g",
   "mass_case": "100% infill",
   "total_mass_g": 381.7,
   "cg_y_mm": 48.0,
   "cg_inside_footprint": true,
   "taps": [
    {
     "tap_at_frac_of_phone_height": 0.25,
     "tap_height_above_desk": 63.5,
     "tip_back_force_N": 7.64,
     "slide_force_N_mu0.3": 1.74,
     "mu_needed_for_1N_tap": 0.19
    },
    {
     "tap_at_frac_of_phone_height": 0.5,
     "tap_height_above_desk": 92.1,
     "tip_back_force_N": 2.74,
     "slide_force_N_mu0.3": 1.74,
     "mu_needed_for_1N_tap": 0.19
    },
    {
     "tap_at_frac_of_phone_height": 0.75,
     "tap_height_above_desk": 120.8,
     "tip_back_force_N": 1.67,
     "slide_force_N_mu0.3": 1.74,
     "mu_needed_for_1N_tap": 0.19
    },
    {
     "tap_at_frac_of_phone_height": 0.95,
     "tap_height_above_desk": 143.7,
     "tip_back_force_N": 1.27,
     "slide_force_N_mu0.3": 1.74,
     "mu_needed_for_1N_tap": 0.19
    }
   ]
  },
  {
   "position": "reading",
   "angle": 55.0,
   "phone": "small 65x140x7, 140 g",
   "mass_case": "est. 50% of solid mass",
   "total_mass_g": 260.9,
   "cg_y_mm": 49.7,
   "cg_inside_footprint": true,
   "taps": [
    {
     "tap_at_frac_of_phone_height": 0.25,
     "tap_height_above_desk": 63.5,
     "tip_back_force_N": 4.99,
     "slide_force_N_mu0.3": 1.19,
     "mu_needed_for_1N_tap": 0.26
    },
    {
     "tap_at_frac_of_phone_height": 0.5,
     "tap_height_above_desk": 92.1,
     "tip_back_force_N": 1.79,
     "slide_force_N_mu0.3": 1.19,
     "mu_needed_for_1N_tap": 0.26
    },
    {
     "tap_at_frac_of_phone_height": 0.75,
     "tap_height_above_desk": 120.8,
     "tip_back_force_N": 1.09,
     "slide_force_N_mu0.3": 1.19,
     "mu_needed_for_1N_tap": 0.26
    },
    {
     "tap_at_frac_of_phone_height": 0.95,
     "tap_height_above_desk": 143.7,
     "tip_back_force_N": 0.83,
     "slide_force_N_mu0.3": 1.19,
     "mu_needed_for_1N_tap": 0.26
    }
   ]
  }
 ],
 "tongue_root": {
  "moment_Nmm": 437.3,
  "section_modulus_mm3": 300.0,
  "bending_stress_MPa": 1.46,
  "note": "hand calc, full-width tongue, load in the print layer plane; not a strength claim"
 },
 "ledge_root": {
  "force_N": 3.93,
  "moment_Nmm": 24.6,
  "bending_stress_MPa": 0.057
 },
 "masses_g_100pct": {
  "base": 184.3,
  "cradle": 57.4
 }
}