If,
in Exercise 5.21, the speed of the stone is increased beyond the
maximum permissible value, and the string breaks suddenly, which of
the following correctly describes the trajectory of the stone after
the string breaks:
(a) the
stone moves radially outwards,
(b) the
stone flies off tangentially from the instant the string breaks,
(c) the stone flies off at an angle with the
tangent whose magnitude depends on the speed of the particle ?
If, in Exercise 5.21, the speed of the stone is increased beyond the maximum permissible value, and the string breaks suddenly, which of the following correctly describes the trajectory of the stone after the string breaks:
(a) the stone moves radially outwards,
(b) the stone flies off tangentially from the instant the string breaks,
(c) the stone flies off at an angle with the tangent whose magnitude depends on the speed of the particle ?
Answer:
(b)
When
the string breaks, the stone will move in
the direction of the velocity at that instant. According to the first
law of motion, the direction of velocity vector is tangential to the
path of the stone at that instant. Hence, the stone will fly off
tangentially from the instant the string breaks.
Answer: (b)
When the string breaks, the stone will move in the direction of the velocity at that instant. According to the first law of motion, the direction of velocity vector is tangential to the path of the stone at that instant. Hence, the stone will fly off tangentially from the instant the string breaks.
