Question #6703e

1 Answer
MeneerNask ยท Paul N.
Jan 23, 2015

The formula is F=m*a
Where F=force, m=mass and a=accerelation.

Fill in what we know:

F=m*a
1600N=m*40m/s^2
m=(1600N)/(40m/s^2) = 40 kg

And there we have a problem, because crate+bricks have a mass of only 40 kg while the crate is 150 kg.

I think you missed, or added, a 0 somewhere.

(1)
Let's make the crate lighter : 15 kg
Then the bricks weigh 40-15=25kg

(2)
Or cut down on the accelaration lets make it 4m//s^2
(40m//s^2 is very high, it's 4 times gravity , or 4*g)
F=m*a
1600=m*4
m=400 kg
Which would leave 400-150=250kg for the bricks

(3)
Or make the force greater: 16000N
F=m*a
16000=m*40
m=400 kg
Which would also leave 400-150=250kg for the bricks

My bet would be on possibility (2)

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