Which would require a greater force –– accelerating a 2 kg mass at 5 m s–2 or a 4 kg mass at 2 m s-2 ?
NCERT Class IX
Sciences - Main Course Book
Chapter 9. Force and Laws of Motion
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Mass 1 = 2 kg
Acceleration 1 = 5 m/s²
Force 1 = 2 × 5 = 10 N
Mass 2 = 4 kg
Acceleration 2 = 2 m/s²
Force 2 = 4 × 2 = 8 N
Since, 10 N ≥ 8 N
Therefore, a greater amount of force is required to accelerate a mass of 2 kg at 5 m/s².
Acceleration 1 = 5 m/s²
Force 1 = 2 × 5 = 10 N
Mass 2 = 4 kg
Acceleration 2 = 2 m/s²
Force 2 = 4 × 2 = 8 N
Since, 10 N ≥ 8 N
Therefore, a greater amount of force is required to accelerate a mass of 2 kg at 5 m/s².
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