Dx_God
Member
- Joined
- Oct 29, 2009
- Messages
- 114
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- HSC
- 2009
Re: 2009 HSC Physics - How did you go?
its a concept question which i put down c first as well but i changed it due to the hard fact i thought of in my mind. consider the case where no earth exist. the force would b only caused due to gravitational attraction. now u put earth in the middle. if c was 2 b correct then ur saying earth does not apply a force on either sun or the moon as the force is constant and hence ur saying newton's theory is totally wrong. so ur basically challenging newton, the greatest sciencest ever and his work. if u still want to say c is correct then u have 2 abolish the whole newtonian physics and it will mean sun would not exert a force on the moon in the first place. if bos said c was the correct answer then i would simply ask them r they saying newton is wrong coz it comes down to tat matter. (and yea i'm a freak at physics) (though newton was abit wrong at his law of universal gravitation but tats only if u take in extremities which is explained by einstein and his general relativity in uni which i have already learnt and i'm yr 12 just 2 make things clear)i think ure looking too much into the question, i think their looking for u to say that g cant be sheilded, hence C is correct
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