2 years ago

What is the future of glass fiber composite in the industry?.

1 answer:

8 0

In boats, and shells for utility and recreational vehicles, glass and mixed composites will replace metal in many applications. (I’m pretty sure that’s right)

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A 200-gr (7000 gr = 1 lb) bullet goes from rest to 3300 ft/s in 0.0011 s. Determine the magnitude of the impulse imparted to the

OlgaM077 [116]

Answer:

The force acting on the bullet $F = 84000 \frac{lb ft}{s^{2} }$

The value of impulse on the bullet in the given time interval P = 92.4 $\frac{lb ft}{sec}$

Explanation:

Mass of the bullet ( m ) = 200 gr = 0.028 lb

Initial velocity ( U ) = 0

Final Velocity ( V ) = 3300 $\frac{ft}{sec}$

Force acting on the bullet $F = \frac{m ( V - U )}{t}$

⇒ $F = \frac{ 0.028 ( 3300 - 0 )}{0.0011}$

⇒ $F = 84000 \frac{lb ft}{s^{2} }$

This is the force acting on the bullet.

Magnitude of the impulse imparted on the bullet $P = F dt$ -------- (1)

Put the value of F & dt in above equation we get,

P = 84000 × 0.0011

P = 92.4 $\frac{lb ft}{sec}$

This is the value of impulse on the bullet in the given time interval.

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