Answer:
gjsgjdcjpdcojdcoj gud gud gud gud gud gud gud gud gud gud gud gud gud gud get home h hum h hum hth hai h h g c b c b v g c h x corolla
Explanation:
here,load=100N
effort=200N
distance travelled by load=2cm
distance travelled by effort=10cm
Now, output work=L*Ld
=100*2
=200g
Again,
input work =E*Ed
200*10
2000j
again, efficiency = output work/input work*100%
200/2000*100%
=10%
please don't forget to write symbol
a) Making h as the shorter cathetus, we have,

We proceed to calculate the work done by gravity


b) It's necessary to calculate the Kinetic Energy, we use the equation of KE,


c) By work energy theorem

d) we calculate net work through the law of conservation



D), because the roller coaster it's falling, therefore, losing height, but gaining velocity