Q. 214.8( 5 Votes )
(a) State a
(a) The rate of doing work is called as the power. The SI unit of power is Watt denoted by W.
1 Watt is the power of appliances that consume the energy at the rate of 1 joule per second.
Mass of brick = 2.5 kg
⇒ Weight = mg = 2.5×10 = 25 N
Weight of 10 bricks = 25×10 = 250 N
Height (h) = 20 m
Time (t) = 50 s
⇒ Power =
Power spent in carrying bricks is 100 Watt.
Rate this question :