code: def test_apply_force_multiple_one_point():
      a, b = symbols("a b")
      P = Point("P")
      B = Body("B")
      f1 = a * B.x
      f2 = b * B.y
      B.apply_force(f1, P)
      assert B.loads == [(P, f1)]
      B.apply_force(f2, P)
      assert B.loads == [(P, f1 + f2)]
  
imports: from sympy import Symbol, symbols, sin, cos, Matrix, zeros, simplify
  from sympy.physics.vector import Point, ReferenceFrame, dynamicsymbols, Dyadic
  from sympy.physics.mechanics import inertia, Body
  from sympy.testing.pytest import raises
label_desc: Use image node_id 11 for calling a global function with example usage: test_apply_force_multiple_one_point() without return types