Can the rotor slice a tomato ? or something rougher like a stone ? and what happens when the main rotor shuts down ? and what happens when the tail-rotor shuts down ?
Ooooo! Let me explain! I know! I know! This is one of the rare occasions that I can answer an aviation related question...
1) It can.
2) It can't. At least not slice... would get a bad dent, depending on the size of the stone.
3) Then you're "made love to".
The main rotor can't really shut down... If the engine shuts down, the rotor keeps spinning and has enough momentum to give you one attempt at landing. This is called autorotation and is practiced throgoughly in your training.
4) Well... if the tail rotor is blocked for some reason, you'd start spinning and would eventually crash. Here's a question for the real experts: If you're in forward flight, does the fin stabilize you enough to enable you to land the helicopter like an airplane?