Question

How much force is required to move an object weights 20 kg, if the value of m = 0.24?
A : 4.8 kg
B : 83.33 kg
C : 1.2 kg
D : 0.48 kg​

Answer 1

Answer:

4.8kg

Step-by-step explanation:

How much force is required to move an object weights 20kg if the value of m = 0.24?

I assume that your m is the coefficient of friction (usually represented by μ).

I also assume that the object is on a flat horizontal surface and that gravitation is g=9.81 ms⁻².

The formula W = mg tells us that its weight is 20×9.81 = 196.2 Newtons. (The 20 Kg was its mass, not its weight.)

Making the further assumption that you will use a horizontal force to move the object, so R=W, the formula F = μR becomes F = μW and so F = 0.24×196.2 = 47.088 Newtons.

Rounding off to 2 s.f. (as the data was to just 2 s.f. ) gives F = 47 Newtons

converting into Kgs

47/9.8kg=4.8kgs