The magnitude of the horizontal force necessary to drag block b to the left at constant speed is 2.52 N.
Calculation:-
F - T -f₁ - f₂ = 0
⇒ F = -T + f₁ + f₂
f₂ = μk(ma + mb)g
f₁ = μkmag
T = μmag
F = μmag + μkmag + μk(ma+mb)g
F = 3 × 0.30 × 1.40 + 0.30 × 4.20 = 2.52 N
Force is a push or pulls upon an item because of the object's interaction with some other object. pressure is a power that can exchange the motion of an object. A force can reason an object with mass to alternate its speed, i.e., to boost up. pressure also can be described intuitively as a push or a pull. A force has each significance and course, making it a vector amount.
The phrase 'Force' has a unique meaning. At this degree, it is absolutely appropriate to describe a force as a push or a pull. A force is not something that an object consists of or 'has in it. A force is exerted on one object through another. The concept of a force isn't always restricted to living matters or non-living matters.
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