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Question

Diagram shows the direction of the total acceleration and velocity of a particle moving clockwise in a circle of radius 5/√3 m at an instant of time. Tangential acceleration at this instant is 5 m/s2. Which of the following statements is not correct?


  1. The centripetal acceleration is

  2. Uniform circular motion
  3. The net acceleration is 10

  4. The particle is slowing down


Solution

The correct options are
B Uniform circular motion
D

The particle is slowing down


since tangential acceleration and v are in same direction, so particle should be speeding up.


tan 30=atac    
13=1ac
ac=53m/s2
Net acceleration
a=a2c+a2t=(53)2+52=10m/s2

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