A man weighing 700 N moves up in a lift with an acceleration of 5m/s^{2} Find the force exerted by the man on the floor of the lift. If the acceleration of the lift changes to 3 m/s^{2}. find the change in the traction of the lift.
Mass of the man m=700/9.8 = 71.43 kg Inertia force on the man, = 71.43 * 5 = 357.1 N […]