Question

1. Figure below shows a student standing on soft sand.
The student does not sink into the sand. [g=10 N/kg]
The student has a mass of 40 kg.
(a) Calculate the force of her body acting on the sand.​

Answer 1

Given that,

Mass = 40kg

Acceleration due to gravity = 10 m/s^2

Force = ?

we know,

• F = ma
• F = 40kg × 10m/s^2
• F = 40×kg×10×m/s^2 ( kg×m/s^2 = 1 Newton )
• F = 400 N

Therefore, force of boy on the sand is 400N

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