Home
Class 12
PHYSICS
A balloon has 2 g of air. A small pin is...

A balloon has 2 g of air. A small pin is pierced into it. The air comes out with a velocity of 4 m/s. If the balloon shrinks completely in 2.5 s. The average force acting on the balloon is

A

0.008 N

B

0.0032 N

C

8N

D

3.2 N

Text Solution

Verified by Experts

The correct Answer is:
B
Average force, `F=m xx a = mxx v/t`
` = 2/1000 xx (4)/(2.5) = 0.0032N`
Promotional Banner

Similar Questions

Explore conceptually related problems

A ballon has 2 g of air . A small hole is pierced into it . The air comes out with relative velocity 4 m/s . If the balloon shrinks completely in 2.5 s , the average force acting on the balloon is

A balloon has 5 g of air. A small hole is pierced into it. The air escapes at a uniform rate with a velocity of 4 cm/s. If the balloon shrinks completely in 2.5 s, then the average force acting on the balloon is

A balloon has 8g of air A small hole is pierced into it The air escapes at a unifrom rate of 7m//s If the ballon shrinks in 5.6 s then the average force acting on the ballon is.

A ballon has a mass of 5 g in air. The air escapes from the ballon at a uniform rate with a velocity of 5 cms^(-1) . If the ballon shrinks completely in 2.5 s, find the average foce acting on the ballon

A balloon has a mass of 10 gram in air. The air escapes from the balloon at a unifrom rate with a velocity of 5 cm //s and the balloon shrinks completely in 2.5 s . Calculate the average force acting on the balloon.

A hydrogen gas filled ballon having a mass of 25 g is released up in air . As the ballon descends , the gas starts leking from it with a unifrom velocity of 12 cm//s and as a result the balloon shrinks completely in 5 s . Find the average force acting on the ballon .

A balloon of mass 2 kg is rising up with an acceleration of 4 m/s^2 . The upward force acting on the balloon is (g = 10 ms^-2)

An empty balloon weighs W . If air equal in weight to W is pumped into the balloon, the weight of the balloon becomes W_(2) . Suppose that the density of air inside and outside the balloon is the same. Then

A body is dropped from a balloon moving up with a velocity of 4 m//s , when the balloon is at a height of 120 m from the ground. The height of the body after 5 s from the ground is: