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A vector has magnitude same as that of A=3 i+4 j and is parallel to B=4 i+3 j. The x and y components of this vector in first quadrant are x and 3 respectively where x= .
4
| A|= 32+42=5, B= 4 i+3 j5
Required vector =| A| B=5 4 i+3 j5=4 i+3 j
x=4 (y-component 3 ✓)
Answer: 4
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A particle is moving in a circle of radius 50 cm in such a way that at any instant the normal and tangential components of its acceleration are equal. If its speed at t=0 is 4 m/s, the time taken to complete the first revolution will be 1 [1-e-2 ]s, where = .
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