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प्रश्न
In a uniform circular motion, the speed continuously changes because of the direction of motion changes.
विकल्प
True
False
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उत्तर
This statement is false.
APPEARS IN
संबंधित प्रश्न
Read the statement below carefully and state, with reason, if it is true or false:
The acceleration vector of a particle in uniform circular motion averaged over one cycle is a null vector.
| A small pebble tied at one end of a string is placed near the periphery of a circular disc, at the centre of which the other end of the string is tied to a peg. The disc is rotating about an axis passing through its centre. |
- What will be your observation when you are standing outside the disc? Explain.
- What will be your observation when you are standing at the centre of the disc? Explain.
Name the force required for uniform circular motion. State its direction.
Is it possible to have an accelerated motion with a constant speed? Explain.
What is a conical pendulum?
The ratio of the angular speed of minute hand and hour hand of a watch is ____________.
A body of mass ·m' is moving along a circle of radius 'r' with linear speed 'v'. Now, to change the linear speed to `V/2` and to move it along the circle of radius '4r', required change in the centripetal force of the body is ______.
A string of length `l` is fixed at one end and carries a mass 'm' at the other end. The mass is revolving along a horizontal circle of radius 'r' making 'θ' as the semi-vertical angle of cone and `(1/pi)` revolutions per second around the vertical axis through fixed end. The tension in the string is ______.
A body is said to be in nonuniform motion if it travels ______.
In uniform circular motion, although the speed is constant, why does acceleration occur?
