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a construction worker is moving sand bags from one side of his site to the other. he lifts a bag that weighs 245 n. how much force does is he applying (in newtons) if the bag is accelerating at a rate of 4.2 m/s2 ?

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The construction worker that is moving sand bags from one side of his site to the other with a weight of 245 n  and with an acceleration of 4.2 m/s²   applies a force of: 105 N

To solve this exercise the formula and procedure to be applied are:

  • W = m * g
  • F = m * a

Where:

  • W = weight
  • m = mass
  • g = gravity
  • F = Force
  • a = acceleration

Information about the problem:

  • W= 245 N
  • g = 9.8 m/s²
  • a= 4.2 m/s²
  • 1 N = kg * m/s²
  • m = ?
  • F=?

Applying the weight formula and clearing the mass we get:

W = m * g

m = W/g

m = 245 N/9.8 m/s²

m = 25 kg

Applying the force formula we get:

F = m * a

F = 25 kg * 4.2 m/s²

F = 105 N

What is force?

It is the physical magnitude that expresses the effort necessary to move the mass of one kilogram with an acceleration of one meter per second squared, this is expressed in units of the international system in Newton.

Learn more about force at: brainly.com/question/12970081

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