366007 Assertion :
A sphere cannot roll on a smooth inclined surface.
Reason :
For a smooth inclined surface force of friction is equal to zero.

366008 Assertion :
The velocity of a body at the bottom of an inclined plane of given height is more when it slides down the plane, compared to when it rolling down the same plane.
Reason :
In rolling down, a body acquires both, kinetic energy of translation and rotation.

366009 A cylinder rolls up an inclined plane, reaches some height and then rolls down (without slipping throughout these motions). The directions of the frictional force acting on the cylinder are

366010 Three bodies a ring \((R)\), a solid cylinder \((C)\) and a solid sphere\((S)\) having same mass and same radius roll down the inclined plane without slipping. They start from rest, if \({v_R},{v_C}\) and \({v_S}\) are velocities of respective bodies on reaching the bottom of the plane, then

366007 Assertion :
A sphere cannot roll on a smooth inclined surface.
Reason :
For a smooth inclined surface force of friction is equal to zero.

366008 Assertion :
The velocity of a body at the bottom of an inclined plane of given height is more when it slides down the plane, compared to when it rolling down the same plane.
Reason :
In rolling down, a body acquires both, kinetic energy of translation and rotation.

366009 A cylinder rolls up an inclined plane, reaches some height and then rolls down (without slipping throughout these motions). The directions of the frictional force acting on the cylinder are

366010 Three bodies a ring \((R)\), a solid cylinder \((C)\) and a solid sphere\((S)\) having same mass and same radius roll down the inclined plane without slipping. They start from rest, if \({v_R},{v_C}\) and \({v_S}\) are velocities of respective bodies on reaching the bottom of the plane, then

366007 Assertion :
A sphere cannot roll on a smooth inclined surface.
Reason :
For a smooth inclined surface force of friction is equal to zero.

366008 Assertion :
The velocity of a body at the bottom of an inclined plane of given height is more when it slides down the plane, compared to when it rolling down the same plane.
Reason :
In rolling down, a body acquires both, kinetic energy of translation and rotation.

366009 A cylinder rolls up an inclined plane, reaches some height and then rolls down (without slipping throughout these motions). The directions of the frictional force acting on the cylinder are

366010 Three bodies a ring \((R)\), a solid cylinder \((C)\) and a solid sphere\((S)\) having same mass and same radius roll down the inclined plane without slipping. They start from rest, if \({v_R},{v_C}\) and \({v_S}\) are velocities of respective bodies on reaching the bottom of the plane, then

366007 Assertion :
A sphere cannot roll on a smooth inclined surface.
Reason :
For a smooth inclined surface force of friction is equal to zero.

366008 Assertion :
The velocity of a body at the bottom of an inclined plane of given height is more when it slides down the plane, compared to when it rolling down the same plane.
Reason :
In rolling down, a body acquires both, kinetic energy of translation and rotation.

366009 A cylinder rolls up an inclined plane, reaches some height and then rolls down (without slipping throughout these motions). The directions of the frictional force acting on the cylinder are

366010 Three bodies a ring \((R)\), a solid cylinder \((C)\) and a solid sphere\((S)\) having same mass and same radius roll down the inclined plane without slipping. They start from rest, if \({v_R},{v_C}\) and \({v_S}\) are velocities of respective bodies on reaching the bottom of the plane, then