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`        if a planet existed whose mass twice that of earth and whose radius was 2 times greater, how much a 1.0 kg mass will weigh on its surfacea)4.4Nb)6.7Nc)2.2 Nd)13.3Nwhat is the solution???? `
2 years ago

Arun
23742 Points
```							For earth,Mass of earth = MRadius of earth = RMass of the body = m = 1 kgWeight on earth is, We = GMm/R2 = mgFor the other planet,Mass = 2MRadius = 2RSo, weight is, Wp = G(2M)(m)/(2R)2=> Wp = (2/4)(GMm/R2)=> Wp = (2/4)(mg)=> Wp = (2/4)(1 × 9.8)=> Wp = 4.9 NMass of the body remains same (1 kg), the weight of the body in the planet is 4.9 N. RegardsArun (askIITians forum expert)
```
2 years ago
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