A Child Swings on a Ball of Mass M on a Rope

question 18

Essay

A child swings on a ball of mass m on a rope in a uniform,vertical circle of radius r at a constant speed v.How much work is done by the centripetal force on the ball during one complete revolution?

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Definitions:

Potassium Ions

Positively charged atoms that are essential for various physiological processes in living organisms, including nerve impulse transmission and muscle contraction.

Sodium Channels

Membrane proteins involved in the conduction of sodium ions through neuronal and muscle cell membranes, crucial for generating electrical signals.

Voltage-gated Channels

Protein channels that open or close in response to changes in membrane potential, allowing ions to enter or exit cells and facilitate electrical signaling.

Resting Neuron

A neuron in its non-excited state, maintaining a stable negative charge inside the cell relative to the outside, ready to transmit signals when activated.