Qualification > Sciences

Physics Help HERE ONLY !!

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nid404:
u need add to the weight of the disc too. 1kg=10N, so 200+300+200(of the disc)=700g
which is 7N i believe

nid404:
yup depends on the weight uve chosen.

F=m*a(m in kg)

since masses here r in grams u need to convert them to kg and then multiply by ten.

Ghost Of Highbury:
correct...i forgot Kg...tks,,

nid404:
never mind ;)

Enia:
Hi. So I had a few questions.

Can anyone please explain the AC generator for me? And also why is the direction reversed every half turn and how does that happen.

Also:

Can you tell me what we are supposed to write in questions where they ask about energy changes that take place? For example for a cart traveling down a ramp and then back up (since the ramp is curved, like skating ramp thingies) Where are we supposed to stop? Like do we also mention sound or just heat and kinetic energy and gravitational potential energy?

Thanks!  :)

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