engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Laws of Motion Common forces in mechanics
4. A block 'A' takes 2 s to slide down a frictionless incline of 30° and length 'l', kept inside a lift going up with uniform velocity 'v'. If the incline is changed to 45°, the time taken by the block, to slide down the incline, will be approximately
1
2.66 s
2
0.83 s
3
1.68 s
4
0.70 s