Ahelicopter is lifting two crates simultaneously. one crate with a mass of 2.800 × 102 kg is attached to the helicopter by a cable. the second crate with a mass of 1.700 × 102 kg is hanging below the first crate and attached to the first crate by a cable. as the helicopter accelerates upward at a rate of 1.39 m/s2, what is the tension in each of the two cables?

Explanation:

It is given that,

Mass of crate 1,

Mass of the crate 2,

It is also mentioned that the second crate is hanging below the first crate and attached to the first crate by a cable.

The acceleration of the helicopter, (upwards)

The tension in the cable 1 is given by :

The tension in the cable 2 is given by :

Hence, this is the required solution.

3. dark matter

empty space could also be a simple vacuum