A> Define power
B> A body of mass 45kg climbs up20 steps in 20 sec. If each step is 25 cm high calculate the power used in climbing take g=10m/s.
Answers
Answered by
0
A.rate of doing work is called as power
Answered by
1
A) rate of doing work or the rate of consumption of energy is Power.
B) power = work / time
work = force x displacement
force = m x g = 45 x 10 = 450N
displacement = 25cm x 20steps = 500cm = 5m
work = 450 x 5 = 2250J
time = 20s
therefore, power = 2250/ 20 = 112.5 watt
hope this helps!!!!!
B) power = work / time
work = force x displacement
force = m x g = 45 x 10 = 450N
displacement = 25cm x 20steps = 500cm = 5m
work = 450 x 5 = 2250J
time = 20s
therefore, power = 2250/ 20 = 112.5 watt
hope this helps!!!!!
Raksha02:
sry..took g as 9.8
but the value of g is given then we cant change it
yaa...i didnt notice tat properly
is tat ok??
Yaa
you are too good
thx!!
Similar questions