1.What is the min. horizontal speed that should be given to the bob of a simple pendulum of length l so that it describes a complete circle?
The answer is sq.root of 5gl.In the solution we take tension in the string at highest point =0 and velocity of the bob at the highest point = v(i.e. non-zero)
2.A small heavy block is attached to the lower end of a light rod of length l which can be rotated about its clamped upper end.What min. horizontal velocity should the block be given so that it moves in a complete vertical circle?
The answer is sq.root of 4gl.In the solution to this question,we take velocity of the block at the highest point =0.
Please explain the difference between the concepts applied in these 2 questions.
1.What is the min. horizontal speed that should be given to the bob of a simple pendulum of length l so that it describes a complete circle?
The answer is sq.root of 5gl.In the solution we take tension in the string at highest point =0 and velocity of the bob at the highest point = v(i.e. non-zero)
2.A small heavy block is attached to the lower end of a light rod of length l which can be rotated about its clamped upper end.What min. horizontal velocity should the block be given so that it moves in a complete vertical circle?
The answer is sq.root of 4gl.In the solution to this question,we take velocity of the block at the highest point =0.
Please explain the difference between the concepts applied in these 2 questions.
Hrishant Goswami , 11 Years ago
Grade 10
