Home
Class 11
PHYSICS
A professional diver of mass 60 kg perfo...

A professional diver of mass 60 kg performs a dive from a platform 10 m above the water surface. Find the magnitude of the average impact force experienced by him if the impact time is 1s on collision with water surface. Assume that the velocity of the diver just after entering the water surface is `4ms^(-1).(g=10ms^(-2))`

A

240N

B

600N

C

300N

D

60N

Text Solution

Verified by Experts

The correct Answer is:
B
`v^(2)-u^(2)=2as, F=(dp)/(dt)=(m(v-u))/(t)`
Promotional Banner

Topper's Solved these Questions

  • LAW OF MOTION

    NARAYNA|Exercise EXERCISE - II (C.W)(IMPULSE)|2 Videos

  • LAW OF MOTION

    NARAYNA|Exercise EXERCISE - II (C.W)(OBJECTS SUSPENDED BY STRINGS AND APPARENT WEIGHT)|21 Videos

  • LAW OF MOTION

    NARAYNA|Exercise EXERCISE - I (H.W)(CIRCULAR MOTION)|3 Videos

  • KINETIC THEORY OF GASES

    NARAYNA|Exercise LEVEL-III(C.W)|52 Videos

  • MATHEMATICAL REVIEW & PHYSICAL WORLD

    NARAYNA|Exercise C.U.Q|13 Videos

Similar Questions

Explore conceptually related problems

A professional diver of mass 60kg performs a dive from a platform 10m above the water surface. Find the magnitude of the average impact force experienced by him if the impact time is 1s on collision with water surface. Assume that the velocity of the diver just after enering the water surface is 4ms^(-1)(g =10 ms^(-2)) .

A diver makes 2.5 revolutions on the way from a 10-m-high platform to the water. Assuming zero initial vertical velocity, the average angular velocity during the dive is.

There is a hole at the side-bottom of a big water tank. The area of the hole is 4mm^(2) to it a pipe is connected. The upper surface of water is 5 m above the hole. The rate of flow of water through the pipe is (in m^(3)s^(-1))(g=10ms^(-2))

A body of mass 2kg moving on a horizantal surface with an initial velocity of comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of 4 ms^(-1) the force required is

block is moving on a rough surface. At time t=0, speed of the block is 20 m/s. Coefficient of friction ( mu ) between block and surface varies with time (t) as shown in figure. The magnitude of velocity of particle after t = 2 second is ( g = 10 ms^-2 )

Two particles of mass 2kg and 6kg are moving on smooth horizontal surface collides with each other.If velocity of their common centre of mass is 10m/s before collision then what will be the total linear momentum of system of particles after collision.(Assume they move along the surface after collision)

A ball of mass 1 kg falls from a height of 5 m above the free surface of water. The relative density of the solid ball is s=2/3 . The ball travels a distance of 2 m under water and becomes stationary. The work done by the resistive forces of water is (-10n)J . Find value of n.

A stone of mass 1 kg is thrown with a velocity of 20ms^(-1) across the frozen surface of a lake and it comes to rest after travelling a distance of 50m. What is the magnitude of the force opposing the motion of the stone?

A boy of mass 60kg is standing over a platform of mass 40kg placed over a smooth horizontal surface. He throws a stone of mass 1kg with velocity v=10m//s at an angle of 45^@ with respect to the ground. Find the displacement of the platform (with boy) on the horizontal surface when the stone lands on the ground. Take g=10m//s^2 .