Home
Class 12
PHYSICS
A point moves along of radius R =10 cm. ...

A point moves along of radius R =10 cm. the path length depends on time according to L=At, where A=1 m/sec. At 5 second after the start of movement.

A

v=1 m/s

B

`omega=1` rad/s

C

`a =10 m//s^(2)`

D

`theta=50 ` rad.

Text Solution

Verified by Experts

The correct Answer is:
ACD
L=t
`v=(dL)/(dt)=1`
`v=omegar =omegaxx0.1`
`omega=10 rad//s`
`a=omega^(2)r =100xx0.1=10 m//s^(2)`
`theta=omegat=10xx5=50 rad.`
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    BANSAL|Exercise PHYSICS PART (A)|32 Videos

  • TEST PAPERS

    BANSAL|Exercise PHYSICS PART (B)|3 Videos

  • TEST PAPERS

    BANSAL|Exercise PHYSICS PART- C|4 Videos

  • SEMICONDUCTORS

    BANSAL|Exercise CBSE Question|32 Videos

Similar Questions

Explore conceptually related problems

A particle lis constrained to move in a circular path of radius r = 6m. Its velocity varies with time according to the relation v = 2t (m/s). Determine its (i) centripetal acceleration, (ii) tangential acceleration, (iii) instantaneous acceleration at (a) t = 0 sec. and (b) t = 3 sec.

The position of a particle moving along x-axis depends on time according to the equation x = at^2 +bt^3, where x is in metre and t is in sec. What are the units and dimensions of a and b : what do they represent?

A paricle of mass m moves along a circle of radius R with a normal acceleration varying with time as w_n=at^2 , where a is a constant. Find the time dependence of the power developed by all the forces acting on the particle, and the mean value of this power averaged over the first t seconds after the beginning of motion.

long piece of paper is10 cm wide and is moving uniformly along its length with a velocity of 2 cm//s . An ant starts moving on the paper from point A and moves uniformly with respect to the paper. A spider was located exactly opposite to the ant just outside the paper at point B at the instant the ant started to move on the paper. The spider, without moving itself, was able to grab the ant 5 second after it (the ant) started to move. Find the speed of ant relative to the paper.

A point moves along a circle having a radius 20cm with a constant tangential acceleration 5cm//s^(2) . How much time is needed after motion begins for the normal acceleration of the point to be equal to tangential acceleration?

A particle moves along an arc of a circle of radius R according to the law l=a sin omegat , where l is the displacement from the initial position measured along the arc, and a and omega are constants. Assuming R=1.00m , a=0.80m , and omega=2.00rad//s , find: (a) the magnitude of the total acceleration of the particle at the points l=0 and l=+-a , (b) the minimum value of the total acceleration w_(min) and the corresponding displacement l_m .

A particle of mass m is moving on a circular path of radius r . Centripetal acceleration of the particle or radius r . Centripetal acceleration of the particle depends on time t according to relation a_(c ) = kt^(2) . What power is delievered to the particle ?

A point moves along a circle with velocity v = at where a 0.5 m/sec2. Then the total acceleration of the point at the moment when it covered (1/10) th of the circle after beginning of motion -

A particle starts from the origin and moves along a stright line If the velocity of the particle at time t seconds 10t cm/s then find the distance traversed during fist seconds after the start.

An electron moves along a circular path of radius 10 cm. If the centripetal acceleration is 4xx10^(11) m//s^(2) , then its linear speed is

BANSAL-TEST PAPERS-PHYSICS
  1. Last year I had been on a business trip to China. I had heard a lot ab...

    Text Solution

    |

  2. two cars start moving from rest with uniform acceleration a=4 m//s^(2)...

    Text Solution

    |

  3. A point moves along of radius R =10 cm. the path length depends on tim...

    Text Solution

    |

  4. From the origin at the same time two points being to move. The first m...

    Text Solution

    |

  5. Match the column

    Text Solution

    |

  6. An atheletic completes a circular loop moving with maximum constant sp...

    Text Solution

    |

  7. Find the work done by tension (in J) on 1 kg block when 4 kg block mov...

    Text Solution

    |

  8. A projectile is projected in xy-plane with a speed of 10 m/s at an ang...

    Text Solution

    |

  9. A scientist measure the initial velocity of an object to be 12.376 m/s...

    Text Solution

    |

  10. On an ice rink, two skaters of mass 60 kg each grab hands and spin in ...

    Text Solution

    |

  11. A smooth inclined plane is inclined at an angle theta with the horizon...

    Text Solution

    |

  12. The displacement x of a particle of mass 1.0 kg moving the one dimensi...

    Text Solution

    |

  13. three point masses A ,B and C are 66 grm each are connected as shown. ...

    Text Solution

    |

  14. If the speed of light c, acceleration due to gravity (g) and pressure ...

    Text Solution

    |

  15. The following sets of three vectors act on a body. Whose resultant can...

    Text Solution

    |

  16. Which of the the following statements is false regarding a ball trhown...

    Text Solution

    |

  17. Two particles of mass m(1) and m(2)(m(1) gt m(2)) are attached to the ...

    Text Solution

    |

  18. Power delivered to a body varies as P=3t^(2). Find out the chang ein k...

    Text Solution

    |

  19. A block of mass 10 kg is placed in a car going down an incline of incl...

    Text Solution

    |

  20. A particle at a height h from the ground is projected with an angle 30...

    Text Solution

    |