Circular Motion
Circular Motion
CIRCULAR MOTION:
If an object moves in a circular path with uniform speed,then its motion is called uniform circular motion.
Some of the examples of uniform circular motion are as follows:
(i)A piece of stone tied to a thread and rotated in a circle with a uniform speed.
(ii) The motion of blades of an electric fan around the axle.
(iii) A satellite in a circular orbit around the earth.
(iv) A car is moving on a circular path with constant speed.
Example: The minute hand of a wall clock is 10 cm long. FInd its displacement and the distance covered from 10: 00 am to 10 : 30 am.
SOLUTION Given, length of the minute hand, l = 10 cm
Displacement from 10:00 am to 10:30 am is given by diammeter AOB = 2l = 20 cm
Total distance covered by the minute hand
The displacement of the minute hand is 20 cm and distance is 31.43 cm.
In Circular motion the : | |||
| Right Option : B | |||
| View Explanation | |||
The second's hand of a watch is 2 cm long the speed of the tip of this hand is | |||
| Right Option : A | |||
| View Explanation | |||
A body moving along a circular path has | |||
| Right Option : A | |||
| View Explanation | |||
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