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PRACTICE · MEMBERSIntermediate · Single correct

PRACTICE / Connected bodies

How much force crosses the contact?

A 12 N horizontal force pushes a 2 kg block against a 4 kg block on a smooth table.

Find the contact force on the 4 kg block.

Organize the givens & assumptions
  • F = 12 N
  • m₁ = 2 kg (left, directly pushed)
  • m₂ = 4 kg (right)

Smooth horizontal table; rigid blocks remain in contact; applied force acts on the 2 kg block.

  1. A12 N12\ \mathrm N
  2. B4 N4\ \mathrm N
  3. C24 N24\ \mathrm N
  4. D8 N8\ \mathrm N

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