Answer to Question #126666 in Physics for Anas

Question

An object has a mass of 300 g. (a) What is its weight on Earth? (b) What is its mass on the Moon? (c) What will be its acceleration on the Moon when a 0.500 N resultant force acts on it?

Answer 1

(a) The weighi of the object is:

$$W = mg$$

where $m$ is its mass and $g = 9.81 m/s^2$ is the gravitational acceleration. Thus:

$$W = 0.3kg\cdot 9.81 m/s^2 = 2.943 N$$

(b) The mass of any object on the Moon is the same as on Earth. In this case 300 g.

(c) The acceleration can be calculated using the Newton's second law:

$$a = \dfrac{F}{m}$$

where $F = 0.5N$ is the resultant force. Thus, obtain:

$$a = \dfrac{0.5N}{0.3 kg} \approx 1.67 m/s^2$$

Answer. a) 2.943 N, b) 300 g, c)1.67 m/s^2.