please help me solve this question.
Attachments:
Answers
Answered by
32
GIVEN,
WEIGHT OF MAN=800 N(W1)
WEIGHT OF LOAD=80 N(W2)
HEIGHT=3m
TIME TAKEN=11 sec
FORMULAS USED,
TOTAL WEIGHT=(W1)+(W2)
WORK DONE=(TOTAL WEIGHT)×(VERTICAL DISTANCE)
POWER=WORK DONE/TIME TAKEN
SOLUTION,
TOTAL WEIGHT=(800+80) N
=880 N
WORK DONE=(880×3) J
=2640 J
POWER=(2640/11) W
=240 W
THEREFORE,
THE POWER OF THE MAN IS 240 W.
Similar questions