Home
Class 12
PHYSICS
A body with mass 2kg moves in one direct...

A body with mass `2kg` moves in one direction in the presence of a force which is described by the potential energy graph. If the body is released from rest at `x=2m`, then its speed when it crosses `x=5m` is `:-`

A

zero

B

`1ms^(-1)`

C

`2ms^(-1)`

D

`3ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
At `x=2m, U=6J`
`:'DeltaU=DeltaKE:.(1)/(2)(2)v^(2)=6-2`
`rArrv=2m//s`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A 5kg. mass is accelerated from rest to 60 m/s in 1 sec. what force acts on it:-

If a body with mass(2kg) moving with acceleration that is equal to 5m/s^2 then what is the value of force experienced by body?

Find the mass of a body which has 5J of kinetic energy while moving at a speed of 2m/s (AS_(1))

A body of mass 5 kg climb a height of 10 m by the force of 170 N . Its velocity at this height wil be ……….

A body of mass m taken from the earth's surface to the height h = 3R (R = Radius of earth) The change in gravitational potential energy of the body will be ........

A body is displaced by 6 m in Y - direction by a force (5,2,3) N , so work done …….. .

A particle of mass m moving in the x - direction with speed 2c is hit by another particle of mass 2m moving in the y - direction with with speed v . If the collision is perfectly inelastic , the percentage loss in the enrgy during the collision is close to .

The graph below shows how the force on a mass depends on the position of the mass. What is the change in the kinetic energy of the mass as it moves from x=0.0m to x=3.0 m ?

A body of mass m attached to a spring which is oscillating with time period 4 seconds. If the mass of the body is increased by 4 kg , Its timer period increases by 2 sec . Determine value of initial mass m .

A particle of mass 2kg is moving on a straight line under the action of force F = (8-2x) N . The particle is released at rest from x = 6 m . For the subsequnent motion(All the value in the right column are in their S.I. units)

ALLEN -TEST PAPER-Exercise (Physics)
  1. The potential energy U(x) of a particle moving along x-axis is shown i...

    Text Solution

    |

  2. A particle is to move along the x-axis from x=0 to x=x(1) while a cons...

    Text Solution

    |

  3. A body with mass 2kg moves in one direction in the presence of a force...

    Text Solution

    |

  4. An escalator is used to move 5 people (60kg each) per minute from the ...

    Text Solution

    |

  5. A stone is dropped into a quiet lake and waves move in circles at the ...

    Text Solution

    |

  6. For conservative force field, vec(F)=-(delU)/(delx)hat(i)-(delU)/(dy)...

    Text Solution

    |

  7. Find the value of x(1), so that int(0)^(x(1))ydx=5

    Text Solution

    |

  8. A rocket rises vertically up from the surface of earth so that it is d...

    Text Solution

    |

  9. Find the rate of change of radius of a sphere when its radius is 4 cm ...

    Text Solution

    |

  10. Consider following statement :- (A) any physical quantity may have m...

    Text Solution

    |

  11. A particle is moving on X-axis. Its velocity time graph is given in th...

    Text Solution

    |

  12. In the given arrangement shown in figure, surface is frictionless, str...

    Text Solution

    |

  13. The position of a particle moving in space varies with time t accordin...

    Text Solution

    |

  14. V(x) is the velocity of a particle of a particle moving along the x-ax...

    Text Solution

    |

  15. At t=0 two trucks A and B were at same point on the road . At t=t(1), ...

    Text Solution

    |

  16. A ball is thrown from the top of 36m high tower with velocity 5m//ss a...

    Text Solution

    |

  17. A toy car can deliver a constant power of 20W. The resistive force on ...

    Text Solution

    |

  18. If momentum (P), area (A) and time (T) are taken to be fundamental qun...

    Text Solution

    |

  19. In ancient time, deffernt system of units was following in which unit ...

    Text Solution

    |

  20. A rectangular farm house has a 1km difference between its sides. Two f...

    Text Solution

    |