Home
Class 12
PHYSICS
In the arrangement shown in figure, the ...

In the arrangement shown in figure, the ends `P` and `Q` of an unstretchable string move downwards with uniform speed `U`. Pulleys `A` and `B` are fixed. Mass `M` moves upwards with a speed

(a) `2U cos theta` (b) `(U)/(cos theta)` (c) `(2U)/(cos theta)` (d) `U cos theta`

A

`2 U cos theta`

B

`U// cos theta`

C

`2U // cos theta`

D

`U cos theta

Text Solution

Verified by Experts

The correct Answer is:
B
Let the velocity of the block m be v upwards, then `v cos theta = u implies v = U // cos theta`
Promotional Banner

Topper's Solved these Questions

  • DYNAMICS OF A PARTICLE

    VMC MODULES ENGLISH|Exercise JEE Main (Archive) Level - I|29 Videos

  • DC CIRCUIT

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE|68 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-G|10 Videos

Similar Questions

Explore conceptually related problems

In the arrangement shown in the Fig, the ends P and Q of an unstretchable string move downwards with uniform speed U. Pulleys A and B are fixed. Mass M moves upwards with a speed

In the arrangement shown in Fig. 15.3.15 the ends P and Q of an unstretchable string move downwards with uniform speed U. Pulleys A nd B are fixed. Mass M moves upwards with a speed.

In the arrangement shown in figure the ends P and Q of an inextensible string move downwards with uniform speed u. Pulleys A and B are fixed. The mass M moves upwards with a speed

int (d theta)/((sin theta - 2 cos theta)(2 sin theta + cos theta))

int (d ( cos theta))/(sqrt(1-cos^(2) theta))

lf cos 5theta-acos^5 theta + b cos^3 theta + c cos theta then c is equal to-

The value of cos^4theta+sin^4theta-6cos^2theta is (a) cos2theta (b) sin2theta (c) cos4theta (d) none of these

if a cos theta + b sin theta = c. then what is the value of a sin theta -b cos theta

Evaluate: intcos 2 theta ln((cos theta+sin theta)/(cos theta-sin theta))d theta

Find the A.M. between: ( cos theta + sin theta )^(2) and ( cos theta - sin theta)^(2)

VMC MODULES ENGLISH-DYNAMICS OF A PARTICLE-JEE Advance (Archive) Level - II (SINGLE OPTION CORRECT TYPE )
  1. If a ship of mass 4 xx 10 ^( 7 ) kg initially at rest ...

    Text Solution

    |

  2. In the arrangement shown in figure, the ends P and Q of an unstretchab...

    Text Solution

    |

  3. A car is moving in a circular horizontal track of radius 10 m with a c...

    Text Solution

    |

  4. A particle P is sliding down a frictionless hemispherical bowl. It pas...

    Text Solution

    |

  5. A plate moves normally with the speed v(1) towads a horizontal jet of ...

    Text Solution

    |

  6. A long horizontal rod has a bead which can slide along its length and ...

    Text Solution

    |

  7. System shown in fig is in equilibrium and at rest. The spring and stri...

    Text Solution

    |

  8. Two masses each equal to m are lying on x-axis at (-a,0)(+a,0) respect...

    Text Solution

    |

  9. A piece of wire is bent in the shape of a parabola y=kx^(2) (y-axis ve...

    Text Solution

    |

  10. A ball of mass (m) 0.5kg is attached to the end of a string having len...

    Text Solution

    |

  11. A block of mass m1 = 1 kg another mass m2 = 2 kg, are placed together ...

    Text Solution

    |

  12. The pressures at A and B in the atmosphere are, respectively,

    Text Solution

    |

  13. A reference frame attached to the earth:

    Text Solution

    |

  14. A small block of mass of 0.1 kg lies on a fixed inclined plane PQ whic...

    Text Solution

    |

  15. Masses M(1),M(2) and M(3) are connected by string of negligible mass w...

    Text Solution

    |

  16. Two blocks of mass 2.9 kg and 1.9 kg are suspended from a rigid suppor...

    Text Solution

    |

  17. Assertion If a charged particle enters from outside in uniform magneti...

    Text Solution

    |

  18. If (2, 3, 5) is one end of a diameter of the sphere x^2+""y^2+""z^2...

    Text Solution

    |

  19. In the figure masses m1, m2 and M are 20 kg, 5kg and 50kg respectively...

    Text Solution

    |

  20. Two block A and B of equal masses are placed on rough inclined plane a...

    Text Solution

    |