Circular Motion
PHXI05:LAWS OF MOTION

363223 Assertion :
Force is required to move a body uniformly along a circle.
Reason :
When a body is in uniform circular motion then its acceleration is zero.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363224 A coin placed on a rotating table just slips when it is placed at a distance of 1cm from the center If the angular velocity of the table is halved, it will just slip when placed at a distance of ____ from the centre.

1 2cm
2 1cm
3 8cm
4 4cm
PHXI05:LAWS OF MOTION

363226 A bob is whirled in a horizontal plane by means of a string with an initial speed of ω rpm. The tension in the string is T. If speed becomes 2ω while keeping the same radius, the tension in the string becomes:

1 T
2 4T
3 T4
4 2T
PHXI05:LAWS OF MOTION

363223 Assertion :
Force is required to move a body uniformly along a circle.
Reason :
When a body is in uniform circular motion then its acceleration is zero.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363224 A coin placed on a rotating table just slips when it is placed at a distance of 1cm from the center If the angular velocity of the table is halved, it will just slip when placed at a distance of ____ from the centre.

1 2cm
2 1cm
3 8cm
4 4cm
PHXI05:LAWS OF MOTION

363225 Assertion :
Linear momentum of a body changes even when it is moving uniformly in a circle.
Reason :
In uniform circular motion velocity remains constant.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363226 A bob is whirled in a horizontal plane by means of a string with an initial speed of ω rpm. The tension in the string is T. If speed becomes 2ω while keeping the same radius, the tension in the string becomes:

1 T
2 4T
3 T4
4 2T
PHXI05:LAWS OF MOTION

363223 Assertion :
Force is required to move a body uniformly along a circle.
Reason :
When a body is in uniform circular motion then its acceleration is zero.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363224 A coin placed on a rotating table just slips when it is placed at a distance of 1cm from the center If the angular velocity of the table is halved, it will just slip when placed at a distance of ____ from the centre.

1 2cm
2 1cm
3 8cm
4 4cm
PHXI05:LAWS OF MOTION

363225 Assertion :
Linear momentum of a body changes even when it is moving uniformly in a circle.
Reason :
In uniform circular motion velocity remains constant.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363226 A bob is whirled in a horizontal plane by means of a string with an initial speed of ω rpm. The tension in the string is T. If speed becomes 2ω while keeping the same radius, the tension in the string becomes:

1 T
2 4T
3 T4
4 2T
PHXI05:LAWS OF MOTION

363223 Assertion :
Force is required to move a body uniformly along a circle.
Reason :
When a body is in uniform circular motion then its acceleration is zero.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363224 A coin placed on a rotating table just slips when it is placed at a distance of 1cm from the center If the angular velocity of the table is halved, it will just slip when placed at a distance of ____ from the centre.

1 2cm
2 1cm
3 8cm
4 4cm
PHXI05:LAWS OF MOTION

363225 Assertion :
Linear momentum of a body changes even when it is moving uniformly in a circle.
Reason :
In uniform circular motion velocity remains constant.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363226 A bob is whirled in a horizontal plane by means of a string with an initial speed of ω rpm. The tension in the string is T. If speed becomes 2ω while keeping the same radius, the tension in the string becomes:

1 T
2 4T
3 T4
4 2T