Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Motion in A Plane question

2005 · Q156
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Motion in A Plane
  5. /2005 · Q156

Motion in A Plane question

2005 · Q156

NEETPhysicsMotion in A PlaneMultiple correct+4 / −1
A stone tied to the end of a string of 1 m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revoluations in 44 seconds, what is the magnitude and direction of acceleration of the stone ?
  1. A
    π2 {\pi ^2}\,π2 m s−-−2 and direction along the radius towards the centre
  2. B
    π2 {\pi ^2}\,π2 m s−-−2 and direction along the radius away from the centre
  3. C
    π2 {\pi ^2}\,π2 m s−-−2 and direction along the tangent to the circle
  4. D
    π2 {\pi ^2}\,π2/4 ms−-−2 and direction along the radius towards the centre.
View written solutionFree

Correct answer: A, B

ar=ω2R {a_r} = {\omega ^2}R\,ar​=ω2R &  at=dvdt=0\,{a_t} = {{dv} \over {dt}} = 0at​=dtdv​=0

or, ar= (2π\pi πn)2R = 4π2\pi ^2π2n2R2
= 4π2(2244)2(1)24{\pi ^2}{\left( {{{22} \over {44}}} \right)^2}{\left( 1 \right)^2}4π2(4422​)2(1)2

AIPMT 2005 Physics - Motion in a Plane Question 26 English Explanation

anet = ar = π2{\pi ^2}π2ms–2 and direction along the radius towards the centre.

PreviousNext

More from Motion in A Plane

  • If the angle between the vectors A and B is θ, the value of the product (B×A).A is equal to2005 · MCQ
  • If a vector 2i+3j​+8k is perpendicular to the vector 4j​−4i+αk, then the value of α is2005 · MCQ
  • If ​A×B​=3​A.B then the value of ​A+B​ is2004 · MCQ
  • The vector sum of two forces is perpendicular to their vector differences. In that case, the forces2003 · MCQ
  • A particle A is dropped from a height and another particle B is projected in horizontal direction with speed of 5/sec from the same height then correct statement is2002 · MCQ
  • If ​A+B​=​A​+​B​ then angle between A and B will be2001 · MCQ
  • Two particles having mass M and m are moving in a circular path having radius R and r. If their time period are same then the ratio of angular velocity will be2001 · MCQ
  • The width of river is 1 km. The velocity of boat is 5 km/hr. The boat covered the width of river in shortest time 15 min. Then the velocity of river stream is2000 · MCQ