JAMB - Physics (2002 - No. 6)
Two force each of 10N acts on a body, one towards the north and the other towards the east.
The magnitude and the direction of the resultant force are
The magnitude and the direction of the resultant force are
20N, 45°E
20N, 45°W
10√2N, 45°W
10√2N, 45°E
Εξήγηση
From Pythagoras,
R2 = 102 + 102
= 100 + 100
= 200
therefore R2 = √200 = √2 x 100
= 10√2, in the direction 45°E
R2 = 102 + 102
= 100 + 100
= 200
therefore R2 = √200 = √2 x 100
= 10√2, in the direction 45°E