Advertisements
Advertisements
Question
If 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?
Options
The stone moves radially outwards.
The stone flies off tangentially from the instant the string breaks.
The stone flies off at an angle with the tangent whose magnitude depends on the speed of the particle.
Solution
The stone flies off tangentially from the instant the string breaks.
Explanation:
The trajectory of the stone after the string breaks, i.e., the stone flies off tangentially from the instant the string breaks.The velocity is always tangential to the circle at every point during the circular motion. When the string breaks, the particle proceeds to move in the tangential direction in accordance with Newton's first law of motion.
APPEARS IN
RELATED QUESTIONS
Give the magnitude and direction of the net force acting on a drop of rain falling down with a constant speed.
Neglect the effect of rotation of the earth. Suppose the earth suddenly stops attracting objects placed near its surface. A person standing on the surface of the earth will.
A particle stays at rest as seen in a frame. We can conclude that
(a) the frame is inertial
(b) resultant force on the particle is zero
(c) the frame may be inertial but the resultant force on the particle is zero
(d) the frame may be non-inertial but there is a non-zero resultant force
A block of mass 2 kg placed on a long frictionless horizontal table is pulled horizontally by a constant force F. It is found to move 10 m in the first seconds. Find the magnitude of F.
State Newton's first law of motion.
State and explain the law of inertia (or Newton's first law of motion).
The amount of inertia of a body depends on its _________.
Name the scientist who first stated the law of inertia.
A body of mass 10 kg is acted upon by two perpendicular forces, 6 N and 8 N. The resultant acceleration of the body is ______.
- 1 m s–2 at an angle of tan−1 `(4/3)` w.r.t 6 N force.
- 0.2 m s–2 at an angle of tan−1 `(4/3)` w.r.t 6 N force.
- 1 m s–2 at an angle of tan−1 `(3/4)` w.r.t 8 N force.
- 0.2 m s–2 at an angle of tan−1 `(3/4)` w.r.t 8 N force.
This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements.
Statement 1: If you push on a cart being pulled by a horse so that it does not move, the cart pushes you back with an equal and opposite force.
Statement 2: The cart does not move because the force described in statement 1 cancel each other.