Test SeriesFree PYQsExamsPricing

JEE Main Physics question

PhysicsWork, Energy and PowerJEE Main

A ball of mass kg is suspended by a string. It is displaced through an angle of and released. When the ball passes through the mean position, the tension in the string is

Answer: (B)

Solution

By energy conservation, . At the mean (lowest) position: T-mg=mv^2/L=mg\Rightarrow T=2mg=2(0.1)(9.8)=1.96 N.

Question ID VK-158400