2. in the Atwood\'s machine as shown in the figure m1 = 30gm; and m2 = 10g. sove

Question

2. in the Atwood's machine as shown in the figure m1 = 30gm; and m2 = 10g. sove for the tension and acceleration of the cord.

1. a 15-g bullet traveling at 500 m/s strikes an 0.8 kg block of wood that is balanced on a table edge of 0.8m above the ground. if the bullet buries itself in the block, find the distance D at which the block hits the floor. (refer to figure 8-61 above) 2. in the Atwood's machine as shown in the figure m1 = 30gm; and m2 = 10g. sove for the tension and acceleration of the cord.

Explanation / Answer

(a)

from conservation of linear momentum

m1u1 + m2u2 = (m1+ m2) V

where m1 = 15 gm = 0.015 kg

            u1 = 500 m/s

            m2 = 0.8 kg

             u2 = 0 m/s   (since it is at rest position)

V  = 9.20 m/s    (appx.)

Given: h = 0. 8   m

for calculation of D =  velocity * time

          =   V * sqrt(2h/g)

           = 9.20 * sqrt(2 * 0.8 /9.8 )

            = 3.717    m (appx.)

post   part ( B )     seperately .....,

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