A ball is held at rest at position A by two light strings. The horizontal string is cut and the ball starts swinging as a pendulum point B is the farthest to the right the ball goes as it swings back and forth. What is the ratio of the tension in the supporting string in position B to its value at A before the horizontal string was cut.
Text Solution
Verified by ExpertsThe correct answer is:
B
At : A
T ′ cos β
T ′ cos β = mg
T ′ = 
At : B
T ′′ – mg cos β = 
at B; v = 0
T ′′ = mg cos β
= 
= 
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