Is an isosceles triangle right-angled at

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

ABC

is an isosceles triangle right-angled at

A

. Forces of magnitudes

2\sqrt{2}

2

, and

6

act along

BC

CA

, and

AB

, respectively. The magnitude of their resultant force is (1)

4

(2)

5

(3)

11+2\sqrt{2}

(4)

30