science
Grade-7
Easy
Question
A biker biking on a circular path is under the action of ___ forces.
- Contact forces
- Non-contact forces
- Balanced forces
- Unbalanced forces
Hint:
Net force is towards centre which causes circular motion.
The correct answer is: Unbalanced forces
- Any body going in a circular motion must have a centripetal force (net force) acting on it towards the centre of the circle.
- Hence, the forces are unbalanced.
- So, the correct option is d.
- A centripetal force is a force which acts inwards to an object that moves in a circular path.
- This force is also dependent on the object's mass, speed of rotation of the object as well as the distance from the center.
- The unit of centripetal force is newton.
- The centripetal force is always directed perpendicular to the direction of the object's displacement.
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