# Answer to Question #53952 in Other Physics for davey

Question #53952

Three physical quantities are given by the following vectors: !

F1 = (4.0ˆi + 6.0 ˆj) N

F2 = (2.5ˆi − 5.0 ˆj) N

r = (4.0ˆi + 4.0 ˆj) m

a) What is the magnitude and direction of the vector F1?

b) Draw a diagram showing the vectors F1 and F2,

together with the vectors F1 + F2 and F1 − F2.

c) Find the quantity Fr = r . F1.

d) Find the vector τ = r × F1.

F1 = (4.0ˆi + 6.0 ˆj) N

F2 = (2.5ˆi − 5.0 ˆj) N

r = (4.0ˆi + 4.0 ˆj) m

a) What is the magnitude and direction of the vector F1?

b) Draw a diagram showing the vectors F1 and F2,

together with the vectors F1 + F2 and F1 − F2.

c) Find the quantity Fr = r . F1.

d) Find the vector τ = r × F1.

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