Answer:
(i)
(a) Kinetic energy of belt or the package.
(b) Heat energy (c) Sound energy
(ii) m = 36 kg, h = 2.4 m, g = 10 m/s2
Gravitational potential energy= mgh
= 36 x 10 x 2.4 = 864 J
(iii) Power
Mass is increased and power is constant, so increase in potential energy
of mass is greater. Also, as mass is increased, speed is reduced and hence time
taken is longer.
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