Home
Class 11
PHYSICS
Find the force exerted by 5kg block on f...

Find the force exerted by 5kg block on floor of lift, as shown in figure. ( Take ,`g=10 ms^(-2)`)

A

100 N

B

115 N

C

105 N

D

135 N

Text Solution

Verified by Experts

The correct Answer is:
C
( c)
`N-70=7xx5`……(i)
`therefore N=105 N`
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    DC PANDEY ENGLISH|Exercise Check point 5.4|20 Videos

  • LAWS OF MOTION

    DC PANDEY ENGLISH|Exercise Chapter exercises (A) Taking it together|71 Videos

  • LAWS OF MOTION

    DC PANDEY ENGLISH|Exercise Check point 5.2|15 Videos

  • KINEMATICS 1

    DC PANDEY ENGLISH|Exercise INTEGER_TYPE|15 Videos

  • LAWS OF THERMODYNAMICS

    DC PANDEY ENGLISH|Exercise Level 2 Subjective|18 Videos

Similar Questions

Explore conceptually related problems

A 2 kg block is present against a rough wall by a force F = 20 N as shown in figure .Find acceleration of the block and force of friction acting on it . (Take g = 10 m//s^(2))

A lift is moving upwards with an acceleration of 2m//sec^(2) . Inside the lift a 4kg block is kept on the floor. On the top of it , 3kg block is placed and again a 2kg block is kept on the 3kg . Calculator : (i) contact force between 2kg block and the 3kg block. (ii) contact force between 4kg block and floor of the lift. Draw the free body diagrams properly & take g=10m//sec^(2)

Two block of mass 4 kg and 2 kg are attached by an inextensible light string as shown in figure. Both the blocks are pulled vertically upwards by a force F=120N Find (a) the acceleration of the blocks, (b) tension in the string. (Take g= 10 ms^(-2) )

Two block of mass 4 kg and 2 kg are attached by an inextensible light string as shown in figure. Both the blocks are pulled vertically upwards by a force F=120N Find (a) the acceleration of the blocks (b) tension in the string. (Take g= 10 ms^(-2) )

Three blocks of masses 5 kg, 3 kg and 2 kg are placed on a rough surface as shown in figure. Coefficient of friction between block and surface is same for all the blocks and is equal to mu = 0.2 . A horizontal force of 15 N is applied on 5 kg block. The force exerted by 3 kg block on 2 kg block is : (g = 10 m/ s^(2) )

A block is hanging with a light string in a lift as shown in the figure (a). The lift is moving in upward direction and its speed time graph is plotted as shown in the figure (b) : (take g = 10 m//s^(2) )

Find the value of friction forces between the blocks A and B and between B and ground. ( Take , g=10 ms^(-2) )

Find the acceleration of the two blocks shown in figure-2.101.Take g=10m/s2

In the figure shown, all surfaces are smooth and force constant of spring is 10N//m . Block of mass (2 kg) is attaced with the spring. The spring is compressed by (2m) and then released. Find the maximum distance d travelled by the block over the inclined plane. Take g=10m//s^(2) . .

A block of mass 2 kg is placed on the floor. The coefficient of static friction is 0.4. A force F of 3 N is applied on the block as shown in figure. The force of friction between the block and the floor is (Take g=10 m s^(-2) )

DC PANDEY ENGLISH-LAWS OF MOTION-Check point 5.3
  1. Find the force exerted by 5kg block on floor of lift, as shown in figu...

    Text Solution

    |

  2. Three blocks of masses m(1),m(2)and m(3) are connected by massless str...

    Text Solution

    |

  3. A 50 kg boy stands on a platform spring scale in a lift that is going...

    Text Solution

    |

  4. An elevator and its load have a total mass of 800 kg. If the elevator,...

    Text Solution

    |

  5. The surface are frictionless, the ratio of T(1) and T(2) is

    Text Solution

    |

  6. Two blocks of masses 2 kg and 1 kg are in contact with each other on a...

    Text Solution

    |

  7. Three blocks are placed at rest on a smooth inclined plane with force ...

    Text Solution

    |

  8. In the arrangement shown, the mass m will ascend with an acceleration ...

    Text Solution

    |

  9. In two pulley-paricle systems (i) and (ii) , the acceleration and forc...

    Text Solution

    |

  10. Three equal weight A,B and C of mass 2kg each are hanging on a string ...

    Text Solution

    |

  11. A string of negligible mass going over a clamped pulley of mass m supp...

    Text Solution

    |

  12. The acceleration of the 2 kg block if the free end of string is pulled...

    Text Solution

    |

  13. In the arrangement shown in the figure, the pulley has a mass 3m, Negl...

    Text Solution

    |

  14. In the figure given below, with what acceleration does the block of ma...

    Text Solution

    |

  15. Three masses of 1 kg, 6 kg and 3 kg are connected to each other with m...

    Text Solution

    |

  16. Two masses m and m' are tied with a thread passing over a pulley, m' i...

    Text Solution

    |

  17. A block of mass 200kg is set into motion on a frictionless , horizonta...

    Text Solution

    |

  18. Two masses M(1) " and " M(2) are attached to the ends of a string whic...

    Text Solution

    |

  19. Two blocks, each having a mass M, rest on frictionless surfaces as sho...

    Text Solution

    |

  20. Two bodies of masses m(1) " and " m(2) are connected a light string wh...

    Text Solution

    |