Question

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.

Answer 1

F = 132N

Step-by-step explanation:

Let the pulling force be F

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

We know that Net Force =
`mass* acceleration`

Now net force = F - mg

F - mg = ma

F = mg + ma

F = m(a+g) =
`12* (1.2 +9.8)=132N`

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