Answer:
15 N and 3.061
Explanation:
From the question,
The minimum force of friction to keep the book from sliding = 15 N.
using
F = mgμ................. Equation 1
Where F = Frictional Force, m = mass of the book, g = acceleration due to gravity, μ = coefficient of friction.
make μ the subject of the equation
μ = F/mg............... Equation 2
Given: F = 15 N, m = 0.5 kg, g = 9.8 m/s²
Substitute into equation 2
μ = 15(0.5×9.8)
μ = 15/4.9
μ = 3.061
Hence the coefficient of friction to keep the book from sliding = 3.061
Answer:
The differences are:
Mass:
1) It is the total amount of matter contained in a body.
2) It's SI unit is kilogram (kg).
3) It's measured by using beam balance
Weight:
1) It is the force which pulls an object towards the center of the earth.
2) It's SI unit is newton(n).
3) It's measured by using spring balance.
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