Question

Women kamla and shanti each of mass 50 and 60 kg respectively client through a height of 10m shanti takes 20 second to reach while kamla takes 40 sec calculate difference in power work and energy

Answer 1

MASS OF SHANTI=50 KG (M1)

MASS OF KAMLA=60 KG(M2)

TIME TAKEN BY SHANTI=20SECONDS(T1)

TIME TAKEN BY KAMLA=40 SECS(T2)

HEIGHT REACHED BY THEM=10M

WORK DONE BY SHANTI= M1GH

                                           =50*9.8*10

                                           =4900J.

POWER= WORK DONE/TIME TAKEN

              =4900/20   

              =245W.

WORK DONE BY KAMLA= M2GH

                                          =60*9.8*10

                                          =5880J.

POWER= WORK DONE/TIME TAKEN

              =5880/40

              =147W.

DIFFERENCE IN POWER=( 245-147)W

                                           =98W.