A simple pendulum is attached to a block which slides without friction down an inclined plane $A B C$ having an angle of inclination $\alpha$ as shown below. While the block is sliding down the pendulum oscillates in such a way that at its mean position the direction of the string is
A simple pendulum is attached to a block which slides without friction down an inclined plane $A B C$ having an angle of inclination $\alpha$ as shown below. While the block is sliding down the pendulum oscillates in such a way that at its mean position the direction of the string is
- [KVPY 2014]
- A
at angle $\alpha$ to the perpendicular to the inclined plane $A C$
- B
parallel to the inclined plane $A C$
- C
vertically downwards
- D
perpendicular to the inclined plane $A C$
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