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Avector in XY-plane has x-component of 5 m and y-component of 10 m. It is rotated in XY -plane so that its x-component is doubled. Then its new y-component is (1) 5 m (3) 2.5 m (2) 20 m (4) 4 m

Avector in XY-plane has x-component of 5 m and y-component of 10 m. It is rotated in XY -plane so that its x-component is doubled.  Then its new y-component is
(1) 5 m (3) 2.5 m (2) 20 m (4) 4 m

Grade:12th pass

1 Answers

VIKRAM KUMAR SHARMA
19 Points
6 years ago
Due to rotation no change occures in the magnitude of a vector. 
initially vector A = 5i + 10j
after rotation  B= 10i + yj 
the magnitude of both A and B will be same .
so its new y-component is 5
Option (1) is correct !!!

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