Home
Class 11
PHYSICS
A ball of mass 3kg moving with a speed o...

A ball of mass 3kg moving with a speed of 100 m/s, strikes a wall at an angle `60^(@)` (as shown in figure). The ball rebounds at the same speed and remains in contact with the wall for 0.2 s, the force exerted by the ball on the wall is

A

`150sqrt(3) N`

B

`100 N`

C

`50sqrt(3)N`

D

`75sqrt(3) N`

Text Solution

Verified by Experts

The correct Answer is:
A
`|vec(F)_(wall)|=(|Deltavec(P)|)/(Deltat)`
`:. F_(wall)=(2 mv cos 30^(@))/0.2=(2xx3xx10)/0.2 xx(sqrt(3))/2=150 sqrt(3)N`
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC FIELD AND FORCES

    RESONANCE ENGLISH|Exercise Exercise|64 Videos

  • NUCLEAR PHYSICS

    RESONANCE ENGLISH|Exercise Exercise|35 Videos

Similar Questions

Explore conceptually related problems

A 3.00 kg steel hall strikes the wall with a speed of 10.0 m//s at an angle of 60^(@) with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.200 s , what is the average force exerted by the wall on the ball?

A 0.5 kg ball moving with a speed of 12 m//s strikes a hard wall at an angle of 30^(@) with the wall. It is reflected with the same speed and at the same angle . If the ball is in contact with the wall for 0.25 s , the average force acting on the wall is

A 3-kg steel ball strikes a wall with a speed of 10.0ms^(-1) at an angle of 60.0^(@) with the surfaces of the wall. The ball bounces off with the same speed and same angle. If the ball was in contact with the wall for 0.2s, find the average force exerted by the wall on the ball.

A 3 kg ball strikes a heavy rigid wall with a speed of 10 m/s at an angle of 60^(@) . It gets reflected with the same speed and angle as shown in Fig. 15.3.11. It the ball is in contact with the wal for 0.20 s, what is the average force exerted on the ball by the wall ?

A ball of mass 0.5 kg moving with a velocity of 2 m//s strikes a wall normally and bounces back with the same speed . If the time of contact between the ball and the wall is 1 millisecond , the average force exerted by the wall on the ball is

A ball of mass 0.5 kg moving with a velocity of 2 m//s strikes a wall normally and bounces back with the same speed . If the time of contact between the ball and the wall is 1 millisecond , the average force exerted by the wall on the ball is

A 1 kg particle strikes a wall with velocity 1 m/s at an angle of 60^o with the wall and reflects at the same angle. If it remains in contact with the wall for 0.1 s, then the force is

A mass of 100 g strikes the wall with speed 5 m//s at an angle as shown in figure and it rebounds with the same speed it the contact time is 2 xx 10^(-3) sec . What is the force applied on the mass by the wall :

A ball weighing 10g hits a hard surface vertically with a speed of 5m//s and rebounds with the same speed The ball remains in contact with the surface speed The ball remains in contact with the surface for 0.01s The average force exerted by the surface on the ball is .

A body of mass 3kg moving with speed 5 ms^(-1) , hits a wall at an angle of 60^(@) and return at the same angle. The impact time was 0.2 sec. calculate the force exerted on the wall :

RESONANCE ENGLISH-NEWTONS LAWS OF MOTION AND FRICTION-Exercise
  1. A man is standing on a sparing platform, Reading of spring balaance is...

    Text Solution

    |

  2. Figure shows a 5 kg ladder hanging from a string that is connected wit...

    Text Solution

    |

  3. A ball of mass 3kg moving with a speed of 100 m/s, strikes a wall at a...

    Text Solution

    |

  4. A block of mass 4 kg is suspended through two light spring balances A ...

    Text Solution

    |

  5. Two masses m(1) and m(2) which are connected with a light string, are ...

    Text Solution

    |

  6. A wooden block and a metal coin are connected by a string as shown in ...

    Text Solution

    |

  7. Calculate the tension in the string shown in figure. The pulley and th...

    Text Solution

    |

  8. The elevator shown in figure is descending with an acceleration of 2m/...

    Text Solution

    |

  9. In fig., a person wants to rise a block lying on the ground to a heigh...

    Text Solution

    |

  10. Blocks of mass M(1) and M(2) are connected by a cord which passes over...

    Text Solution

    |

  11. A painter of mass M stands on a platforms of mass m and pulls himself ...

    Text Solution

    |

  12. One end of massless rope, which passes over a massless and frictionles...

    Text Solution

    |

  13. The vertical displacement of a block A in meter is given by y=t^(2)//4...

    Text Solution

    |

  14. A metal sphere I hung by a string fixed to a wall. The forces acting o...

    Text Solution

    |

  15. A small, light pulley is attached with a block C of mass 4 kg as shown...

    Text Solution

    |

  16. A perfectly straight portion of a uniform rope has mass m and length L...

    Text Solution

    |

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

    Text Solution

    |

  18. A lift of mass 1000 kg is going up. The variation in the speed of lift...

    Text Solution

    |

  19. A cord is wrapped on a pulley (disk) of mass M and radius R as shown i...

    Text Solution

    |

  20. A person is standing in an elevator. In which situation he finds his w...

    Text Solution

    |