Lesson: Newton’s Third Law of Motion

A lift is accelerating vertically upwards at 2.6 m/s². A man of mass 124 kg is standing inside. Determine the reaction force of the floor on the man.

A body of mass 87 kg was placed inside a box of mass 60 kg which was attached to a vertical string. A tension of 265 kg-wt was applied to the string causing them to rise vertically. Determine the force exerted by the body on the base of the box while they were rising upwards. Take .

An elevator was accelerating vertically downward at 1.7 m/s². Given that the acceleration due to gravity is , find the reaction force of the floor to a passenger of mass 103 kg.