A force produces an acceleration of 5.0  \(cm/s^{2}\) when it acts on a body of mass 20 g. Find the force acting on the body.

  1. 2 × 10-3 N
  2. 4 × 10-3 N
  3. 1 × 10-3 N
  4. 5 × 10-3 N

Answer (Detailed Solution Below)

Option 3 : 1 × 10-3 N
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Detailed Solution

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CONCEPT:

  • Force: The interaction which after applying on a body changes or try to change the state of rest or state of motion of the body is called force.

Force (F) = Mass (m) × acceleration (a) 

CALCULATION:

Given that:

Mass of the body (m) = 20 g = 20/1000 = 0.02 kg

Acceleration (a) = 5 cm/s2 = 5/100 = 0.05 m/s2

Force (F) = Mass (m) × acceleration (a) = 0.02 × 0.05 = 1.0 × 10-3 N

So option 3 is correct. 

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