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Motion in a Plane

AIPMT 2003MCQMedium📈 Topic in 25% papers+4−1
Ques. 1AIPMT 2003

A particle moves along a circle of radius ( 20 ) m with constant tangential acceleration. If the velocity of the particle is 80 m/s at the end of the second revolution after motion has begun, the tangential acceleration is

  1. 40 m/s2
  2. 640 m/s2
  3. 160 m/s2
  4. 40 m/s2

Answer

(1) 40 m/s2

Solution

In 2 revolutions the particle covers a distance along the circle

s = 2 2 r = 4 20 = 80 m

The tangential acceleration is constant and the particle starts from rest, so v2 = u2 + 2at s gives

(80)2 = 0 + 2at 80

at = 6400160 = 40 m/s2

Answer: (1)

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Ques. 2AIPMT 2002

A particle A is dropped from a height and another particle B is projected in horizontal direction with speed of 5 m/sec from the same height then correct statement is

  1. particle A will reach at ground first with respect to particle B
  2. particle B will reach at ground first with respect to particle A
  3. both particles will reach at ground simultaneously
  4. both particles will reach at ground with same speed.
Ques. 3AIPMT 2001

If | A + B | = | A | + | B |, then angle between A and B will be

  1. 90
  2. 120
  3. 0
  4. 60
Ques. 4AIPMT 2001

Two particles having mass M and m are moving in a circular path having radius R and r. If their time periods are the same, then the ratio of their angular velocities will be

  1. rR
  2. Rr
  3. 1
  4. Rr
Ques. 5AIPMT 2001

A particle is projected making an angle of 45 with horizontal having kinetic energy K. The kinetic energy at highest point will be

  1. K 2
  2. K2
  3. 2K
  4. K
Ques. 6AIPMT 2000

The width of river is 1 km. The velocity of boat is 5 km/hr. The boat covered the width of river along the shortest path in 15 min. Then the velocity of river stream is

  1. 3 km/hr
  2. 4 km/hr
  3. 29 km/hr
  4. 41 km/hr
Ques. 7AIPMT 2000

Two projectiles of same mass and with same velocity are thrown at an angle 60 and 30 with the horizontal, then which will remain same

  1. time of flight
  2. range of projectile
  3. maximum height acquired
  4. all of them

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All NEET Physics chapters
Class 11Units and MeasurementsMotion in a Straight LineMotion in a PlaneLaws of MotionWork, Energy and PowerSystem of Particles and Rotational MotionGravitationMechanical Properties of SolidsMechanical Properties of FluidsThermal Properties of MatterThermodynamics (Physics)Kinetic TheoryOscillationsWaves
Class 12Electric Charges and FieldsElectrostatic Potential and CapacitanceCurrent ElectricityMoving Charges and MagnetismMagnetism and MatterElectromagnetic InductionAlternating CurrentElectromagnetic WavesRay Optics and Optical InstrumentsWave OpticsDual Nature of Radiation and MatterAtomsNucleiSemiconductor ElectronicsExperimental Skills (Physics)