Question

Which would require greater force - accelerating a 7.5 kg mass at 2.5 m/ s^2 , or 12kg

mass at 1.5 m/s^2 .​

Answer 1

Provided that:

★ Case number first:

• Acceleration = 2.5 m/s sq.
• Mass = 7.5 kilograms
• Force = ???

★ Case number second:

• Acceleration = 1.5 m/s sq.
• Mass = 12 kilograms
• Force = ???

Using concept:

★ Newton's scond law of motion that tell us about the formula of force.

Using formula:

• F = ma

Where, a denotes acceleration, F denotes force and m denotes mass.

Required solution:

★ Finding force in case first!

→ Force = Mass · Acceleration

→ F = m · a

→ F = ma

→ F = 7.5(2.5)

→ F = 18.75 N

• Force = 18.75 Newton

★ Finding force in case second!

→ Force = Mass · Acceleration

→ F = m · a

→ F = ma

→ F = 12(1.2)

→ F = 18 N

• Force = 18 Newton

★ Which one required more force!?

• Case 2nd required more force that is an object of acceleration = 1.5 m/s sq. and mass = 12 kilograms.