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- direction of motion.
- tangent to the circle at the point of observation
- direction of velocity
- direction perpendicular to velocity
Answer (Detailed Solution Below)
Option 4 : direction perpendicular to velocity
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The correct answer is direction perpendicular to the velocity.
- The direction of the acceleration is inwards. The acceleration in a uniform circular motion is along the radius and towards the center.
- The movement of a body following a circular path is called a circular motion.
- The motion of a body moving with constant speed along a circular path is called Uniform Circular Motion.
- In this motion speed is constant but the velocity changes.
- In the case of uniform circular motion, the acceleration is ar = v2/r = ω2r.
- A particle is moving in a uniform circular motion:
- Velocity is changing at every instant.
- There is no tangential acceleration.
- Its speed is constant.
- Examples
for Circular Motion:
- The motion of blades of the windmills.
- The tip of the second hand of a watch with a circular dial shows uniform circular motion.
- The motion of electrons around its nucleus.
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