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troubleshooting Question

BASIC PHYSICS tension in a cable

Avatar of andieje
andieje asked on
Math / Science
6 Comments1 Solution550 ViewsLast Modified:
Hi

I asked this question recently:

The question has a crane lifting a mass of 1500kg with an acceleration of 3 ms^2. What is the tension cable on the crane during this period of velocity.

Answer:
the net upward force = mass * acceleration = 4500 N
the downward force due to gravity is (1500 8 9.8) = 14700 N
total upward tension on the cable must be (4500 + 14700) = 19200 N

But the question says what is the tension in the cable? How do you word the answer? Do you say 'the cable has an upward tension of 19200 N and a downward tension of 14700 and so the cable has a net upward tension of 4500N'

thanks


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