Question

Identify which of the statements given below are applicable for an object to move in a circle.

• A. The object must continuously slow down
• B. Object must accelerate
• C. The object must be acted on by balanced forces
• D. The object must move at a uniform velocity.

Answer 1

The correct option is B

Object must accelerate

Step 1: Explanation for the correct answer

b) Object must accelerate.

1. When an object moves in a circular path, then that object will be under the influence of centripetal acceleration.
2. The direction of acceleration is perpendicular to the direction of velocity.
3. So, when the object is said to be in a circular motion then that object must have some acceleration.

Step 2: Explanation for the wrong answer

a)The object must continuously slow down to move in a circular path

1. No need to slow down the velocity of motion to continue in a circular path.
2. An object which is moving in constant velocity in a circular path is said to be in a uniform circular motion.
3. So, No need to slow down continuously to continue on a circular path.

c)The object must be acted on by balanced forces

1. Without the action of balanced force, the object can be in a circular motion.
2. So, the statement is not applicable.

d)The object must move at a uniform velocity.

1. If the object is moving at a uniform velocity in a circular path, then it is known as uniform circular motion.
2. Without uniform velocity, an object can continue in the circular path.
3. So, this statement is not applicable

Hence,

option (b) is correct.