A body of mass 205 kg was left to slide down a plane inclined at to the horizontal. A force started acting on the body causing its acceleration to halve. Given that the line of action of the force made an angle of with the line of greatest slope of the plane and that they both lie in the same vertical plane, find the magnitude of this force. Consider the acceleration due to gravity to be 9.8 m/s2.
Practice: Motion of a Body on a Smooth Inclined Plane