Question

A block lies on a frictionless floor. a force of 5 n pulls toward the east while a force of 4 n pulls toward the north. what is the magnitude of the net force on the block?

Answer 1

Given below the arrangement of loading on the larger boat by two tug boats.

F₁ = 5 N

F₂ = 4 N

Angle between them θ = 90⁰

Resultant between two vectors,
`F=√(F_1^2+F_2^2+2F_1F_2cos\theta )`

Substituting

`F = √(5^2+4^2+2*5*4*cos 90) \\ \\ = 6.403 N`

So magnitude of the net force on the block = 6.403 N