Home
Class 12
PHYSICS
A block of mass 2 kg is plased on a smoo...

A block of mass 2 kg is plased on a smooth horizontal surface. Two forces `F_(1)=20` N and `F_(2)=5` N start acting on the block in opposite directions as shown. If block gets displaced by 5 m in the direction of net force then work done by `F_(2)` is :-

A

`-75J`

B

`75 J`

C

`-25J`

D

`25 J`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - A)|64 Videos

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - B)|35 Videos

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise SECTION-J (AAKASH CHALLENGERS QUESTIONS)|14 Videos

  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION-D ( Assertion - Reason Type Questions ))|12 Videos

Similar Questions

Explore conceptually related problems

Two blocks A and B each of mass m are placed on a smooth horizontal surface. Two horizontal force F and 2F are applied on blocks A and B, respectively, as shown in fig. Block A does not slide on block B. Then then the normal reaction acting between the two blocks is (assume no friction between the blocks)

Two blocks A and B each of mass m are placed on a smooth horizontal surface. Two horizontal force F and 2F are applied on blocks A and B, respectively, as shown in fig. Block A does not slide on block B. Then then the normal reaction acting between the two blocks is (assume no friction between the blocks)

Two blocks A and B each of mass m are placed on a smooth horizontal surface. Two horizontal force F and 2F are applied on blocks A and B, respectively, as shown in fig. Block A does not slide on block B. Then then the normal reaction acting between the two blocks is (assume no friction between the blocks)

Two blocks A and B each of mass m are placed on a smooth horizontal surface. Two horizontal force F and 2F are applied on blocks A and B, respectively, as shown in fig. Block A does not slide on block B. Then then the normal reaction acting between the two blocks is (assume no friction between the blocks)

A block of mass 10 kg is placed on a horizontal surface as shown in the figure and a force F = 100 N is applied on the block as shown, in the figure. The block is at rest with respect to ground. If the contact force between block and ground is 25n (in Newton) then value of n is : (Take g = 10 m//s^(2))

Two blocks of masses 7 kg and 3 kg are connected by a spring of stiffness 1000Nm^(-1) and placed on a smooth horizontal surface. They are acted by horizontal forces of 72 N and 32 N in opposite directions as shown in the figure. When accelerations of the blocks are equal and constant, the extension of the spring is

Two blocks of mass 1 kg & 2 kg are hanged from a light pulley and resting on a horizontal surface. A time varying force F = 4t N is acting on pulley in the direction shown . Time after which block will break off the surface will be -

A horizontal force F pushes wedge of mass M on a smooth horizontal surface. A block of mass m is stationary to the wedge, then:

A block of mass 1kg is placed on a rough horizontal surface. A spring is attached to the block whose other end is joined to a rigid wall, as shown in the figure. A horizontal force is applied on the block so that it remains at rest while the spring is elongated by x(x ge (mumg)/(k)) . Let F_(max) and F_(mi n) be the maximum and minimum values of force F for which the block remains in equilibrium. For a particular x, F_(max)-F_(mi n)=2N . Also shown is the variation of F_(max)+F_(mi n) versus x , the elongation of the spring. The coefficient of friction between the block and the horizontal surface is :

Two constant horizontal force F_1 and F_2 are acting on blocks A and B. At an instant acceleration of block B is 4m//s^2 in direction of F_1 and acceleration of block A w.r.t block B at this moment is:

AAKASH INSTITUTE ENGLISH-WORK, ENERGY AND POWER-EXERCISE
  1. A particle moves from point P(1,2,3) to (2,1,4) under the action of a ...

    Text Solution

    |

  2. Which of the following vector is perpendiuclar to the vector vecA=2hat...

    Text Solution

    |

  3. A block of mass 2 kg is plased on a smooth horizontal surface. Two for...

    Text Solution

    |

  4. A position dependent force F ia acting on a particle and its force-pos...

    Text Solution

    |

  5. A man of mass 50 kg is standing in an elevator. If elevator is moving ...

    Text Solution

    |

  6. A particle moves along x - axis under the action of a position depende...

    Text Solution

    |

  7. What should be the angel between the direction of force and displaceme...

    Text Solution

    |

  8. A body constrained to move along y-axis is subjected to a constant for...

    Text Solution

    |

  9. A cubical vessal of height 1 m is full of water. What is the amount of...

    Text Solution

    |

  10. A person pulls a bucket of water from a well of depth h. if the mass ...

    Text Solution

    |

  11. Force constants K(1) and K(2) of two springs are in the ratio 5:4. The...

    Text Solution

    |

  12. Two springs have their force constants in the ratio of 3:4. Both the s...

    Text Solution

    |

  13. A particle of mass 3 kg is moving along x - axis and its position at t...

    Text Solution

    |

  14. A force vecF=(2hati+hatj+hatk)N is acting on a particle moving with co...

    Text Solution

    |

  15. Potential energy of a particle at position x is given by U=x^(2)-5x. W...

    Text Solution

    |

  16. A block of mass 4 kg is pulled along a smooth inclined plane of inclin...

    Text Solution

    |

  17. A stone is tied to one end of a light inexensible string of length l a...

    Text Solution

    |

  18. From a waterfall, water is falling down at the rate of 100kg / s on th...

    Text Solution

    |

  19. A body is moved along a straight line by a machine delivering constant...

    Text Solution

    |

  20. In perfectly elastic collision between two masses m(1)and m(2) in one ...

    Text Solution

    |