A porter lifts a luggage of 20 kg from the ground and puts it on his head 3.0m above the ground. After keeping it on his head he walks 10 meters. Calculate the total work done by him on the luggage.
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W= F×S ×Cos@
Here @(theta) =0°
so Cos0°=1
W= F×S (F= mass× Acceleration due to g )
_______(S= Distance of luggage from ground)
W= mg×S
W= 20×9.8×10
W= 1960 Joule
mark it b
Here @(theta) =0°
so Cos0°=1
W= F×S (F= mass× Acceleration due to g )
_______(S= Distance of luggage from ground)
W= mg×S
W= 20×9.8×10
W= 1960 Joule
mark it b
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