A rectangular solid box of length 0.3 m is held horizontally, with one of its sides on the edge of a platform of height 5m. When released, it slips off the table in a very short time \[\tau =0.01s,\] remaining essentially horizontal. The angle by which it would rotate when it hits the ground will be (in radians) close to :- [JEE Main 8-4-2019 Afternoon] |
A) 0.02
B) 0.28
C) 0.5
D) 0.3
Correct Answer: C
Solution :
[c] Angular impulse = change in angular momentum |
time taken by rod to hit the ground |
in this time angle rotate by rod |
radian |
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