Home
Class 12
PHYSICS
A man of mass 50 kg us standing on a 100...

A man of mass `50 kg` us standing on a `100 kg` plank kept on a fricitonless horizontal floor. Initially both are at rest. If the man starts walking on the plank with speed `6m//s` towards right relative to the plank, then amount of muscle energy spent by the man is

A

`600J`

B

`200J`

C

`400J`

D

`500J`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    AAKASH INSTITUTE|Exercise Assignment (Section - C) Objective Type Questions (More than one option are correct)|28 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    AAKASH INSTITUTE|Exercise Assignment (Section - D) Linked Comprehension Type Questions|20 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    AAKASH INSTITUTE|Exercise Assignment (Section - A) Objective Type Questions (One option is correct)|62 Videos

  • SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS

    AAKASH INSTITUTE|Exercise Assignment (Section-D (Assertion and reason))|5 Videos

  • TEST 1

    AAKASH INSTITUTE|Exercise EXERCISE|9 Videos

Similar Questions

Explore conceptually related problems

A man of mass 80 kg stands on a plank of mass 40 kg . The plank is lying on a smooth horizontal floor. Initianlly both are at rest. The man starts walking on the plank towards north and stops after moving a distance of 6 m on the plank. Then

A man of mass m is standing on a plank of equal mass m resting on a smooth horizontal surface. The man starts moving on the plank with speed u relative to the plank. The speed of the man relative to the ground is

A man weighing 60 kg is standing on a trolley weighting 240 kg. The trolley is resting on frictionless horizontal rails. If the man starts walking on the trolley with a velocity of 1 m/s, then after 5s, his displacement relative to the ground is

A man of mass 60 kg is standing on a boat of mass 140 kg, which is at rest in still water. The man is initially at 20 m from the shore. He starts walking on the boat for 4 s with constant speed 1.5 m/s towards the shore. The final distance of the man from the shore is

A man weighing 80 kg is standing on a trolley weighing 320 kg . The trolley is resting on frictionless horizontal rails. If the man starts walking on the trolley along the rails at speed 1 m//s (w.r.t. to trolley) then after 4 s his displacement relative to the ground will be :

A man of mass m_1 is standing on a platform of mass m_2 kept on a smooth horizontal surface. The man starts moving on the platform with a velocity v_r relative to the platform. Find the recoil velocity of platform.

A man of mass m is standing on a stationary board of mass M kept on a fixed frictionless horizontal surface. The man starts running rightward on the board and acquires a speed u relative to the board. Find his speed relative to the fixed surface.

AAKASH INSTITUTE-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Assignment (Section - B) Objective Type Questions (One option is correct)
  1. A circular plate of diameter 'a' is kept in contact with a square plat...

    Text Solution

    |

  2. A body of mass m is projected from ground for horizontal range R. At t...

    Text Solution

    |

  3. A man of mass 50 kg us standing on a 100 kg plank kept on a fricitonle...

    Text Solution

    |

  4. A man of mass m jumps onto a boat which has a mass M. If the person ha...

    Text Solution

    |

  5. Two smooth prisms of similar right-triangular sections are arranged on...

    Text Solution

    |

  6. Spring Gun Recoil A loaded spring gun, initially at rest on a horizo...

    Text Solution

    |

  7. Two blocks of mass 2kg and 5kg are given speed as shown in the figure....

    Text Solution

    |

  8. A ball is allowed to fall from rest on a horizontal floor from a heigh...

    Text Solution

    |

  9. A particle is dropped from rest from a height h(0) on a horizontal flo...

    Text Solution

    |

  10. During collision between the objects.

    Text Solution

    |

  11. A particle of mass m moving with a speed u strikes a smooth horizontal...

    Text Solution

    |

  12. A particle collides with a smooth, surface with speed u at an angle th...

    Text Solution

    |

  13. A particle of mass m strikes a disc of radius R and mass m with a spee...

    Text Solution

    |

  14. Two identical billiard balls are in contact on a table. A third identi...

    Text Solution

    |

  15. Two blocks A and B of mass 2m and m respectively are connected to a ma...

    Text Solution

    |

  16. A ball of mass M moving with speed v collides perfectly inelastically ...

    Text Solution

    |

  17. A body of mass m moving with a velocity v is approaching a second obje...

    Text Solution

    |

  18. A body of mass M is moving on a smooth surface with speed v(0). Anoth...

    Text Solution

    |

  19. A rigid rod is rotating as well as translating on a smooth horizontal ...

    Text Solution

    |

  20. For the equilibrium of the system shown, the value of mass m should be

    Text Solution

    |