# Force, mass and weight - problems

The force, mass and weight category introduces problems of an entry level of difficulty consisted from conversions between force and mass, various calculations involving acceleration, volume and density.

1. The weight of a block made of concrete | level 15 | log in |

2. The weight of a block of concrete | level 24 | log in |

3. The mass of a block of concrete | level 20 | log in |

4. Weight of a person on the Moon, in kN | level 13 | log in |

5. Find the weight of a person in kN | level 9 | log in |