Question #128716

A 1kg ball is connected to a rigid rod with negligible mass. If it is released from at the position shown, determine its speed when the rod becomes vertical. The spring is initially unstretched and has a spring constant k=4N/m.

Expert's answer

Let rod be initially at horizontal position and length of rod is 1 meter.

Hence potential energy of the particle will change into kinetic energy.

"mgh = \\frac{1}{2} mv^2"

Solving It,we get

"V =\\sqrt{2gh} = 4.43 m\/s"

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