(self, frame)
return self.mass * self.point.vel(frame)
Linear momentum of the particle.

        The linear momentum L, of a particle P, with respect to frame N is
        given by

        L = m * v

        where m is the mass of the particle, and v is the velocity of the
        particle in the frame N.

        Parameters
        ==========

        frame : ReferenceFrame
            The frame in which linear momentum is desired.

        Examples
        ========

        >>> from sympy.physics.mechanics import Particle, Point, ReferenceFrame
        >>> from sympy.physics.mechanics import dynamicsymbols
        >>> m, v = dynamicsymbols('m v')
        >>> N = ReferenceFrame('N')
        >>> P = Point('P')
        >>> A = Particle('A', P, m)
        >>> P.set_vel(N, v * N.x)
        >>> A.linear_momentum(N)
        m*v*N.x
Linear momentum of the particle.
Linear momentum of the particle .
def linear_momentum(self, frame):
        """Linear momentum of the particle.

        The linear momentum L, of a particle P, with respect to frame N is
        given by

        L = m * v

        where m is the mass of the particle, and v is the velocity of the
        particle in the frame N.

        Parameters
        ==========

        frame : ReferenceFrame
            The frame in which linear momentum is desired.

        Examples
        ========

        >>> from sympy.physics.mechanics import Particle, Point, ReferenceFrame
        >>> from sympy.physics.mechanics import dynamicsymbols
        >>> m, v = dynamicsymbols('m v')
        >>> N = ReferenceFrame('N')
        >>> P = Point('P')
        >>> A = Particle('A', P, m)
        >>> P.set_vel(N, v * N.x)
        >>> A.linear_momentum(N)
        m*v*N.x

        """

        return self.mass * self.point.vel(frame)
def linear_momentum ( self , frame ) : return self . mass * self . point . vel ( frame )