Home
Class 11
PHYSICS
A ball of relative density 0.8 falls int...

A ball of relative density 0.8 falls into water from a height of 2 m. find the depth to which the ball will sink (neglect viscous forces)

Text Solution

Verified by Experts

The correct Answer is:
8
Retardation in water, `a=("upthrust"-"weight")/("mass")`
`=(V(1)g-V(0.8)g)/(V(0.8))=g//4`
Now, `V_(2)^(2)=V_(1)^(2)-2(a)h_(0),0=2gh-2ah_(0)`
`h_(0)=(gh)/(a)=((g)(2))/(g//4)=8m`
Promotional Banner

Similar Questions

Explore conceptually related problems

A ball of relative density 0.8 falls into water from a height of 2 m. The depth to which the ball will sink is (neglect viscous forces)

A ball whose density is 0.4 xx 10^3 kg//m^3 falls into water from a height of 9 cm. To what depth does the ball sink ?

A ball whose density is 0.4zxx1^(3) kg//m^(3) falls into water from a height of 9 cm.To what depth does the balll sink?

A ball is dropped from a height of 3 m. What is the height upto which the ball will rebound ? The cofficient of restitution is 0.5.

A rubber ball is dropped on the ground from a height of 1m. What is the height to which the ball will rebound, if the coefficient of restitution between the ball and the ground is 0.8?

A ball of mass 500 g falls from a height of 4 m Find the K.E. of the ball when it reaches the ground. (Take g =9.8 m/s^2 )

A ball is falling from a height of 15 cm into water. To which depth the ball sinks if density of ball is 0.6 xx 10^3" kg/m"^3?

Knowledge Check

  • A ball of relative density 0.8 falls into water from a height of 2 m. The depth to which the ball will sink is (neglect viscous forces)

    A
    8 m
    B
    2 m
    C
    6 m
    D
    16 m

  • A rubber ball is dropped on the ground from a height of 1m. What is the height to which the ball will rebound, if the coefficient of restitution between the ball and the ground is 0.8?

    A
    0.5m
    B
    0.25n
    C
    0.64m
    D
    0.8m

  • A ball is dropped from a height of 10 m, as it falls,

    A
    its velocity increases and acceleration decreases.
    B
    its velocity decreases and acceleration increases.
    C
    its velocity increases and acceleration remains constant.
    D
    its velocity and acceleration remains constant.