Two bodies of mass 10 kg and 5 kg moving in concentric orbits of radii R and r such that their periods are the same. Then the ratio between their centripetal acceleration is 

(1) R/r

(2) r/R

(3) R2/r2

(4) r2/R2

Subtopic:  Circular Motion |
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NEET 2022 - Target Batch - Aryan Raj Singh

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A particle is moving in a horizontal circle with constant speed. It has constant 

(1) Velocity

(2) Acceleration

(3) Kinetic energy

(4) Displacement

Subtopic:  Circular Motion |
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NEET 2022 - Target Batch - Aryan Raj Singh

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The angular speed of a fly wheel making 120 revolutions/minute is  

(1) 2π  rad/s

(2) 4π2  rad/s

(3) π  rad/s

(4) 4π  rad/s

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Certain neutron stars are believed to be rotating at about 1 rev/sec. If such a star has a radius of 20 km, the acceleration of an object on the equator of the star will be 

(1) 20×108m/sec2

(2) 8×105m/sec2

(3) 120×105m/sec2

(4) 4×108m/sec2

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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An electric fan has blades of length 30 cm as measured from the axis of rotation. If the fan is rotating at 1200 r.p.m, the acceleration of a point on the tip of the blade is about

(1) 1600 m/sec2

(2) 4740 m/sec2

(3) 2370 m/sec2

(4) 5055 m/sec2

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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The angular speed of seconds needle in a mechanical watch is 

(1) π30 rad/s

(2) 2π rad/s

(3) π rad/s

(4) 60π rad/s

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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What is the value of linear velocity, if ω=3i^4j^+k^ and r=5i^6j^+6k^ 

(1) 6i^+2j^3k^

(2) 18i^13j^+2k^

(3) 4i^13j^+6k^

(4) 6i^2j^+8k^

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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A particle moves with constant speed v along a circular path of radius r and completes the circle in time T. The acceleration of the particle is:

(1) 2πv/T

(2) 2πr/T

(3) 2πr2/T

(4) 2πv2/T

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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In 1.0 s, a particle goes from point A to point B, moving in a semicircle of radius 1.0 m (see figure). The magnitude of the average velocity is 

(1) 3.14 m/s

(2) 2.0 m/s

(3) 1.0 m/s

(4) Zero

Subtopic:  Speed & Velocity |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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A stone ties to the end of a string 1m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revolution in 44 seconds, what is the magnitude and direction of acceleration of the stone 

(1) π24ms2and direction along the radius towards the centre

(2) π2ms2 and direction along the radius away from the centre

(3) π2ms2 and direction along the radius towards the centre

(4) π2ms2 and direction along the tangent to the circle

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level: