A) 25g. B)102kg. C) 12mg

What is the weight of each of the following masses at Earths surface?

250N,1020N,1.2N

Thanks

12 * 10^-3 * 10^1 = 0.12 N

To find the weight of an object at Earth's surface, we can use the formula:

weight = mass x acceleration due to gravity

The acceleration due to gravity at Earth's surface is approximately 9.8 m/s^2.

A) For 25g:
First, convert the mass to kilograms:
25g = 0.025kg
Now, calculate the weight:
weight = 0.025kg x 9.8 m/s^2 = 0.245 N

So, the weight of 25g is 0.245 Newtons.

B) For 102kg:
The mass is already given in kilograms.
weight = 102kg x 9.8 m/s^2 = 999.6 N

So, the weight of 102kg is 999.6 Newtons.

C) For 12mg:
First, convert the mass to kilograms:
12mg = 0.012g = 0.000012kg
Now, calculate the weight:
weight = 0.000012kg x 9.8 m/s^2 = 0.0000001176 N

So, the weight of 12mg is 0.0000001176 Newtons.