A spherical rigid ball is released from rest and starts rolling down an inclined plane from height h=
7 m as shown in the figure. It hits a block at rest on the horizontal plane (assume elastic collision). If
the mass of both the ball and the block is m and the ball is rolling without sliding, then the speed of
the block after collision is close to
B
Answers
Answered by
1
Answer:
2
1
mv
2
+
2
1
IW
2
=mgh
Total(K.E)=P.E
∴
2
1
mv
2
+
2
1
(
5
2
mR
2
)
R
2
V
2
=mgh
∴v=
7
10gh
On collision V
ball
=V
block
∴V=
7
10×9×7
=10m/s
Similar questions