No they can not if you have a letter from doctor
Employers can't force you to work under any circumstances. You work what the employer demands, or don't and get fired or disciplined. If your doc says no OT, your employer can dismiss you. Simple.
a force of depend on mass
In India it is legal for your employer to force you to stay after your shift has ended.
increases with speed
No. By law no employer can force you to work at all, especially without payment.
The force would be the weight of the object.
can an employer force an employee to take a leave of absence with no medical documentation?
lifting any heavy material
Uses force
An employer cannot force anyone to do anything. You can resign, or they can decide to terminate you.
No, its your job if you want to quit then quit but no-one can force you.
Yes.Three basic ingredients are required for a thunderstorm to form: moisture, rising/unstable air, and a lifting mechanism to force this rising air higher and faster.