A point object O can move along vertical line A B as shown in the figure. At t=0, the image of the object is visible to D and then the object O is released from rest from point A. The time for which object is visible to D is T. Find T2. (Given L=9.8 m )

Question

A point object O can move along vertical line A B as shown in the figure. At t=0, the image of the object is visible to D and then the object O is released from rest from point A. The time for which object is visible to D is T. Find T2. (Given L=9.8 m ) (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Required time is given by 3 L=(1/2) g t2 ⇒ t=√(6 L/g)

Q. A point object $O$ can move along vertical line $A B$ as shown in the figure. At $t = 0$ , the image of the object is visible to $D$ and then the object $O$ is released from rest from point $A$ . The time for which object is visible to $D$ is $T$ . Find $T^{2}$ . (Given $L = 9.8 m$ )

Required time is given by
$3 L = \frac{1}{2} g t^{2} \Rightarrow t = \frac{6 L}{g}$

Q. A point object O can move along vertical line AB as shown in the figure. At t=0, the image of the object is visible to D and then the object O is released from rest from point A. The time for which object is visible to D is T. Find T2. (Given L=9.8m )

Required time is given by 3L=21​gt2⇒t=g6L​​

Q. A point object $O$ can move along vertical line $A B$ as shown in the figure. At $t = 0$ , the image of the object is visible to $D$ and then the object $O$ is released from rest from point $A$ . The time for which object is visible to $D$ is $T$ . Find $T^{2}$ . (Given $L = 9.8 m$ )

Required time is given by
$3 L = \frac{1}{2} g t^{2} \Rightarrow t = \frac{6 L}{g}$