A balloon has mass of 10 g in air. The air escapes from the balloon at a uniform rate with velocity 4 . 5 cm s - 1 . If the balloon shrinks in 5 s completely. Then, the average force acting on that balloon will be (in dyne).

Question

A balloon has mass of 10 g in air. The air escapes from the balloon at a uniform rate with velocity 4 . 5 cm s - 1 . If the balloon shrinks in 5 s completely. Then, the average force acting on that balloon will be (in dyne)., 3, 9, 12, 18

MARKS App · Accepted Answer

Given that the mass of the air m = 10 g and it escapes in time t = 5 s with velocity v = 4 . 5 cm s - 1 . The average force on the balloon can be given as, F = v d m d t ⇒ F = 4 . 5 × 10 5 = 9 dyne

Search any question & find its solution

Looking for more such questions to practice?