lockshernostaw
lockshernostaw lockshernostaw
  • 21-11-2019
  • Physics
contestada

A 12 kg barrel is pulled up by a rope. The barrel accelerates at 1.2 m/s2. Find the force exerted by the rope. Show all your work.

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SouthernRider
SouthernRider SouthernRider
  • 25-11-2019

Answer:

F = 132N

Explanation:

Let the pulling force be F

Given the mass of the barrel is 12 Kg and The acceleration is 1.2 m/[tex]sec^2[/tex]

We know that Net Force = [tex]mass\times acceleration[/tex]

Now net force = F - mg

F - mg = ma

F = mg + ma

F = m(a+g) = [tex]12\times (1.2 +9.8)=132N[/tex]  

Note that there will be a downward force acting on the body which is equal to mg

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