Answered

A 2kg mass and a 4kg mass on a horizontal frictionless surface are connected by a massless string A. They are pulled horizontally across the surface by a second string B with a constant acceleration of 12 m/s^2. What is the magnitude of the force of string B on the 2kg mass?

Answer :

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Answer:

72 N

Explanation:

Applying,

F = (m'+m)a..................... Equation 1

Where F = Force, m' = First mass, m = second mass, a = acceleration.

From the question,

m' = 2 kg, m = 4 kg, a = 12 m/s²

Substitute these values into equation 1

F = 12(2+4)

F = 12×6

F = 72 N

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