Question

plz help urgent plz........

Answer 1

1.hii it is too easy .you apply the formula p=mgh/t.because mgh is work done by man. Here

P=70×10×30/5×60s=70watt

2.Here m=50kg

g=10m/s^2

h=20× 15=300cm=3m

P=50×10×3/60=25watt