Question

A has a mass of 7 kg, object B has a mass of 5 lbm, and object C has a mass of 0.5 slug. (a) Which object has the largest mass? Which object has the smallest mass? (b) Find the weights of objects A, B and C (in both N and lbf) on the surface of Mars.

Answer 1

1) Object C has the largest mass.

2)Object has the smallest mass.

3) Weight of A = 26.6 Newtons

4)Weight of B = 8.6184 Newtons

5)Weight of C = 27.7286 Newtons

Step-by-step explanation:

Since all the given masses have different unit's we shall convert them all into a same base unit for comparison. The base unit is selected to be kilogram.

Hence

1) Mass of object A = 7 kilogram

2) Mass of object B = 5 pounds

We know that 1 pound equals 0.4536 kilograms Hence 5 pounds equals

`0.4536* 5=2.268kg`

3) Mass of object C = 0.5 slug

We know that 1 slug equals 14.594 kilograms Hence 0.5 slug equals

`14.594* 0.5=7.297kg`

Upon comparing all the 3 masses we conclude that object C has the largest mass and object B has the smallest mass.

Part b)

Weight of an object is given by

`Weight=mass* g`

Now on Mars value of g equals
`3.8m/s^(2)`

Thus the corresponding weights are as under:

`W_(A)=3.8* 7=26.6N\\\\W_(B)=3.8* 2.268=8.6184N\\\\W_(C)=3.8* 7.297=27.7286N\\\\`