Question

Which statement about mass and weight is correct? A A mass experiences a weight due to a gravitational field. B Mass and weight are different types of force. C Mass and weight have the same unit. D When an object expands, its mass changes but its weight stays the same.

Answer 1

Answer: Option A

Explanation:

A mass experiences weight due to gravitational field.

Mass is not a type of force but weight is.

Unit of mass is kg whereas unit of weight is N(newton).

When an object expands, its mass and weight don't change(its volume changes).

Answer 2

Only A is correct.

B is incorrect, since mass is not a force, it is just a quantity of matter present in a substance. Only Weight is a force.

C is incorrect, since as discussed above, they are totally different quantities so they do not have the same unit. Mass is kg, Weight is $kg \frac{m}{s^{2}}$ or N.

D is incorrect, since expansion of an object does not necessarily mean increase of mass. And also, if mass changes, then weight also can change.