A bike stuntman rides inside a well of frictionless surface given by z = a(x² + y² ), underthe action of gravity acting in the negative z direction. g = -g2. What speed should bemaintain to be able to ride at a constant height z, without falling down?(a) /gz.(b) 3gz,(c) /2gz,(d) The biker will not be able to maintain a constant height, irrespective of speed.

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A bike stuntman rides inside a well of frictionless surface given by z = a(x? + y ), under the action of gravity acting in the negative z direction. =-g2. What speed should be maintain to be able to ride at a constant height z, without falling down? (a) /gz, (b) 3gz, (c) /2gz, (d) The biker will not be able to maintain a constant height, irrespective of speed.

A bike stuntman rides inside a well of frictionless surface given by z = a(x? + y ), under the action of gravity acting in the negative z direction. =-g2. What speed should be maintain to be able to ride at a constant height z, without falling down? (a) /gz, (b) 3gz, (c) /2gz, (d) The biker will not be able to maintain a constant height, irrespective of speed.