A 50kg with 20kg load on his climbs up 20 steps of 0-25 m height each- The work done in climbing is

Question

A  50kg with  20kg load on his climbs up  20 steps of  0-25 m height each- The work done in climbing is

Toppr Admin · Accepted Answer

Correct option is D- - 3430 J -Total mass - - -50 -20- - 70 kg -Total height - - 20 -times 0-25 - 5 m -Work done - increase in potential energy-W-PE-uparrow- -therefore - work done-160- - - mgh - 70 -times 9-8 -times 5 - 3430 J -

A $$ 50$$kg man with $$ 20$$kg load on his head climbs up $$ 20$$ steps of $$ 0.25 $$m height each. The work done in climbing is

Correct option is D. $$ 3430 J $$
Total mass = $$ (50 +20) = 70 kg $$
Total height = $$ 20 \times 0.25 = 5 m $$
Work done = increase in potential energy
$$W=PE\uparrow$$
$$ \therefore $$ work done = $$ mgh = 70 \times 9.8 \times 5 = 3430 J $$

A $$ 50$$kg man with $$ 20$$kg load on his head climbs up $$ 20$$ steps of $$ 0.25 $$m height each. The work done in climbing is

Correct option is D. $$ 3430 J $$Total mass = $$ (50 +20) = 70 kg $$Total height = $$ 20 \times 0.25 = 5 m $$Work done = increase in potential energy$$W=PE\uparrow$$$$ \therefore $$ work done = $$ mgh = 70 \times 9.8 \times 5 = 3430 J $$

Correct option is D. $$ 3430 J $$
Total mass = $$ (50 +20) = 70 kg $$
Total height = $$ 20 \times 0.25 = 5 m $$
Work done = increase in potential energy
$$W=PE\uparrow$$
$$ \therefore $$ work done = $$ mgh = 70 \times 9.8 \times 5 = 3430 J $$