Question

A bullet of mass 0.03 kg moving with a speed of 400 ms penetrates 12 cms into a fixed block of wood Calculate the average force exerted by the wood on the bullet. A boy of mass 50 kg sits in a swing suspended by a rope 5 mlong. A person pulis​

Answer 1

Answer:

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Answer 2

Answer:

Given:-

Mass= 0.03 kg

u= 400 m/s

v= 0 m/s

h= 0.12 m

Average force =?

We know that

Average force = ma

For finding average force, we need to find out acceleration.

v^2 - u^2 = 2as

Then put all the values in equation.

From this we get a = 2000000/3 . Put a in the formula of average force.

F = ma

F = 0.03 kg ×200000/3

F = 20000 N

F = 2× 10^4 N