An object carried in a space probe above the Earth has a weight of $3.5\,\text{N}$. At the space probe’s height, the gravitational field strength is $7.0\,\text{N kg}^{-1}$. At the Earth’s surface, the gravitational field strength is $9.8\,\text{N kg}^{-1}$. What are the object’s mass and its weight at the Earth’s surface?
- Amass $0.50\,\text{kg}$, weight $3.5\,\text{N}$
- Bmass $0.50\,\text{kg}$, weight $4.9\,\text{N}$
- Cmass $2.0\,\text{kg}$, weight $3.5\,\text{N}$
- Dmass $2.0\,\text{kg}$, weight $20\,\text{N}$