Home
Class 11
PHYSICS
Let us consider two forces F(1) " and " ...

Let us consider two forces `F_(1) " and " F_(2)` acting on a body of mass 2 kg as shown in the figure. `F_(1)=10N`, `F_(2)=`2N , what will be the acceleration?

A

4

B

1

C

2

D

3

Text Solution

Verified by Experts

The correct Answer is:
A

Unbalanced external force= `F_(1)-F_(2)=10-2=8N`
In the direction of `F_(1)`.
so, `F=ma implies a=(F)/(m)=8/(2)=4ms^(-1)`

The body move in direction of `F_(1)`
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    DC PANDEY|Exercise Check point 5.1|20 Videos
  • LAWS OF MOTION

    DC PANDEY|Exercise Check point 5.2|15 Videos
  • LAWS OF MOTION

    DC PANDEY|Exercise Subjective Question|27 Videos
  • KINEMATICS 1

    DC PANDEY|Exercise INTEGER_TYPE|15 Videos
  • LAWS OF THERMODYNAMICS

    DC PANDEY|Exercise Level 2 Subjective|18 Videos

Similar Questions

Explore conceptually related problems

Two forces F_(1) " and " F_(2) are acting on a rod abc as shown in figure.

A block of mass 10kg is kept on a rought floor .The coefficient of friction between floor and block are mu_(s)= 0.4 and mu_(k) = 0.3 forces F_(1) = 5 N and F_(2) = 4 N are applied on the block as shown in figure If F_(1) = 5N and F_(2) = a N for what maximum value of a the motion of block impenride?

Two blocks of masses m_(i) = 2kg and m_(2) = 4kg hang, over a massless pulley as shown in the figure. A force F_(0)=100 N acting at the axis of the pulley accelerates the system upwards Then :

Two blocks of masses m_(1)=2kg and m_(2)=5kg hang over a massless pulley as shown in the figure. A force F_(0)=100N acting at the axis of the pulley accelerates the system upwards. Then : ( Take g=9.8m//s^(2))

Two forces of mangitude F_(1) and F_(2) are acting on an object.The magnitude of the net force F_(n e t ) on the object will be in the range.

Two blocks of masses m_(1)=2 kg and m_(2)=5 kg hang over a massless pulley as shown in the fig A force F_(0)=100N acting at the axis of the pulley accelerates the system upwards Find (a) the acceleration of each mass (b) the tension in the string.

Two constant forces vec(F)_(1) and vec(F)_(2) acts on a body of mass 8 kg. These forces displaces the body from point P(1, -2,3) to Q(2,3,7) in 2s starting from rest. Force vec(F)_(1) is of magnitude 9 N and is acting along vector (2hat(i)-2hat(j)+hat(k)) . Work done by the force vec(F)_(2) is :-

A block is kept at rest on a rought ground as shown. Two force F_(1) and F_(2) are acting on it. If we increased either of the two force F_(1) and F_(2) , force of friction acting on the block will increase. By increasing F_(1) , normal reaction from ground will increase.

When forces F_(1) , F_(2) , F_(3) are acting on a particle of mass m such that F_(2) and F_(3) are mutually prependicular, then the particle remains stationary. If the force F_(1) is now rejmoved then the acceleration of the particle is

DC PANDEY-LAWS OF MOTION-example
  1. A force F=(6hati-8hatj+10hatk)N produces acceleration of sqrt(2) ms^(-...

    Text Solution

    |

  2. A force F=(2thati+3t^(2)hatj)N acts on an object moving in XY-plane. F...

    Text Solution

    |

  3. Let us consider two forces F(1) " and " F(2) acting on a body of mass ...

    Text Solution

    |

  4. A batsman hits back a ball straight in the direction of the bowler wit...

    Text Solution

    |

  5. A hammer of mass 1 kg moving with speed of 6 ms^(-1) strikes a wall an...

    Text Solution

    |

  6. A cricket ball of mass 150 g is moving with a speed of 12ms^(-1) and i...

    Text Solution

    |

  7. Fig. shows an estimated force-time graph for a base ball struck by a b...

    Text Solution

    |

  8. A block of mass 25 kg is raised by a 50kg man in two different ways as...

    Text Solution

    |

  9. A bullet mass 10gm is fired from a gun of mass 1 kg . If the recoil ve...

    Text Solution

    |

  10. An explosion blows a rock into three parts. Two parts go off at right ...

    Text Solution

    |

  11. Two objects each of mass 5 kg are moving in the same straight line but...

    Text Solution

    |

  12. A riding ball of mass m strikes a rigid wall at 60^(@) and gets reflec...

    Text Solution

    |

  13. Resolve horizontally and vertically a force F= 8N which makes an angle...

    Text Solution

    |

  14. Resolve a weight of 10N in two directions which are parallel and perpe...

    Text Solution

    |

  15. An object is in equilibrium under four concurrent forces in the direct...

    Text Solution

    |

  16. Determine the tensions T(1) and T(2) in the string as shown in figure.

    Text Solution

    |

  17. One end of a string 0.5 m long is fixed to a point A and the other end...

    Text Solution

    |

  18. A block of mass m is at rest on a rough wedge as shown in figure. What...

    Text Solution

    |

  19. A cylinder of weight W is resting on a V-groove as shown in figure.Dr...

    Text Solution

    |

  20. Three blocks A,B and C are placed one over the other as shown in figur...

    Text Solution

    |