3 grooves AB,AC and AD are made in a circular disk lying in a vertical plane 3 particles B,C and D constrained to move along path AB,AC and AD respectively are released from point A.Particle B reaches point B in time tB,particle C reaches point C in time tC and particle D reaches at point D in time tD.Then which of the following statements is incorrect

Question

samigupta8 · Answer

$$t_{B}=t_{C}=t_{D}$$
$$t_{B}>t_{C}=t_{D}$$
$$t_{C}>t_{B}>t_{D}$$
$$t_{D}=t_{B}>t_{C}$$

anonymous · Answer

is point a the center of the disk?

samigupta8 · Answer

the figure is like this one
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