In case of planets the necessary acceleration is provided by______________?
Correct answer: A. Gravitational force
- A. Gravitational force
- B. Frictional force
- C. Coulomb force
- D. Centripetal force
Explanation
A planet needs centripetal acceleration to remain in orbit, and the gravitational force of the Sun provides this inward force. Friction is absent in space, while Coulomb force does not control planetary orbits. The likely mistake is choosing centripetal force, which describes the required net inward force rather than identifying its physical source here.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
Practise Rotational and Circular Motion
521 free Rotational and Circular Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Angular and Linear Quantities questions
When a wheel 1 m in diameter makes 30 rev min the linear speed of the point on its rim in ms-1 is_______________?
A cyclist cycling around a circular racing track skids because_____________?
In an angular motion, Newton's second law of motion is_____________?
When a body moves in a circle of radius r with linear speed V its centripetal force is_______________?
When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by______________?
hen a body moves in a circle, the angle between its linear velocity and angular velocity is always_______________?