If the mass of the planet is 5*10^20kg and a body of mass 20 kg is on the planet then what is the value of gravitational force if the radius of the planet is 3.34*10^4m. Find the weight of the body on the planet.

Use your formulae?

Come on, this is not a homework service site. Know the rules. :rolleyes:

You're big enough to do A2 level physics, you should be able to take your responsibilities as such.

You.. bt when you are desperate to match your answer we tally wit othrs whhther you are on the right way or nt and I did the same...

If you posted what you have tried, that would be better since we would already be doing the matching for you, and on top of that, we will show you exactly what you did wrong, instead of you going and looking forever what has gone wrong, why 'that person used that and not that' and so on.