Irene Moyo, who was employed as a receptionist by Mhondoro Stationers (Pvt) Ltd was suspended and subsequently dismissed on 1 November 2007. The reason for her dismissal was alleged disobedience to a lawful order by the employer. This arose from the fact that on 31 October 2007, she developed a serious headache while at work and wanted to see her doctor immediately. When she sought permission from her immediate supervisor to see the doctor, this was turned down and fearing the worst for her health she decided to visit her personal doctor nonetheless. Upon returning to work the following day she found a letter of dismissal from employment waiting for her.Required:In relation to employment law, discuss the nature of possible legal remedies available to Irene Moyo. (10 marks)
的小球被系在轻绳的一端，在竖直平面内做半径为
的圆周运动，运动过程中，小球受到空气阻力的作用，设某一时刻小球通过轨道的最低点时，绳子的张力为
，此后小球继续作圆周运动，经过半个圆周恰好能通过最高点，则小球从最低点运动到最高点的过程中小球克服空气阻力所做的功为多大？