A simple pendulum with a bob of mass m=1 kg, charge q=5μC and string length l=1 m is given a horizontal velocity u in a uniform electric field E=2×106 V/m at its bottom most point A as shown in figure. It is given that the speed u is such that the string slacks at point C. Find the speed u.[Take g=10 m/s2]

A simple pendulum with a bob of mass m=1 kg, charge q=5μC and string

1.	A simple pendulum with a bob of mass m=1 kg, charge q=5μC and string length l=1 m is given a horizontal velocity u in a uniform electric field E=2×106 V/m at its bottom most point A as shown in figure. It is given that the speed u is such that the string slacks at point C. Find the speed u.[Take g=10 m/s2]
Answer» A simple pendulum with a bob of mass $m = 1 kg$ , charge $q = 5 μ C$ and string length $l = 1 m$ is given a horizontal velocity $u$ in a uniform electric field $E = 2 \times 10^{6} V/m$ at its bottom most point $A$ as shown in figure. It is given that the speed $u$ is such that the string slacks at point $C$ . Find the speed $u$ . [Take $g = 10 {m/s}^{2}$ ]

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