A parachutist after bailing out falls 50 m without friction. When parachute opens, it decelerates at 2 m/s² He reaches the ground with a speed of 3 m/s. At what height, did he bail out

Question:

Options :

(a) 293 m
(b) 111 m
(c) 91 m
(d) 182 m

Answer :

(a) 293 m

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Four particles each of mass m are placed at the corners of a square of side length l. The radius of gyration of the system about an axis perpendicular to the square and passing through its centre is [EAMCET (Med.) 2000]

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Four particles each of mass m are placed at the corners of a square of side length l. The radius of gyration of the system about an axis perpendicular to the square and passing through its centre is [EAMCET (Med.) 2000]

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