The time taken by a body to slide down a smooth inclined plane is 4 sec. The time taken by the body to slide, the first 1/4th of the length of the plane is

1 sec

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2 sec

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\sqrt{3} s e c

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0.25 sec

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Solution

The correct option is A 2 sec
Acceleration along the slope is $g s i n θ$
$s = 0.5 a t^{2}; t = 4$
For 1/4 distance, $s / 4 = 0.5 a {t^{^{'}}}^{2}$
from above two equations,
$t^{^{'}} = 2 s e c$

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The time taken by a body to slide down a smooth inclined plane is 4 sec. The time taken by the body to slide, the first 1/4th of the length of the plane is

The correct option is A 2 secAcceleration along the slope is g sinθs=0.5at2;t=4For 1/4 distance, s/4=0.5at′2from above two equations, t′=2 sec

The correct option is A 2 sec
Acceleration along the slope is $g s i n θ$
$s = 0.5 a t^{2}; t = 4$
For 1/4 distance, $s / 4 = 0.5 a {t^{^{'}}}^{2}$
from above two equations,
$t^{^{'}} = 2 s e c$