132. A ball of radius 11 cm and mass 8 kg rolls from rest down a ramp of length 2m
A ball of radius 11 cm and mass 8 kg rolls from rest down a ramp of length 2m. The ramp is inclined at 35° to the horizontal. When the ball reaches the bottom, its velocity is (sin 35o = 0.57)
(a) 2 m/s
(b) 5 m/s
(c) 4 m/s
(d) 6 m/s
Ans. c
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a