massless ropes or cables

# massless ropes or cables - as a = F/m and the mass of a...

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massless ropes or cables Almost all situations you will be presented with in classical mechanics deal with massless ropes or cables. If a rope is massless, it perfectly transmits the force from one end to the other: if a man pulls on a massless rope with a force of 10 N the block will also experience a force of 10 N. An important property of massless ropes is that the total force on the rope must be zero at all times. To prove this, we go back to Newton's Second Law. If a net force acts upon a massless rope, it would cause infinite acceleration,

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Unformatted text preview: as a = F/m , and the mass of a massless rope is 0. Such a situation is physically impossible and, consequently, a massless rope can never experience a net force. Thus all massless ropes always experience two equal and opposite tension forces. In the case of a man pulling a block with a rope, the rope experiences a tension in one direction from the pull of the man, and a tension in the other direction from the reactive force of the block: Figure %: The Tension in a Massless Rope...
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## This note was uploaded on 12/03/2011 for the course PHYSICS 010 taught by Professor - during the Fall '09 term at Montgomery.

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massless ropes or cables - as a = F/m and the mass of a...

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