Question

A piano has a mass of 99 kg. What is the weight of the piano?

A. 1030 N
B. 842 N
C. 1129 N
D. 970 N
Help!!

Answer 1

`D.\ 970\ N`

Step-by-step explanation:

Given:

Mass of Piano: 99kg

Required:

Calculate its weight

The weight of an object is calculate as thus;

`Weight = Mass\ (m) * Acceleration\ due\ to\ gravity\ (g)`

`m = 99kg` and
`g = 9.8m/s^2`

The formula becomes

`Weight = 99kg * 9.8m/s^2`

`Weight = 970.2\ kgm/s^2`

`Weight = 970.2\ N`

`Weight = 970\ N` Approximated

Hence, the weight of the piano is 970N