Answer to Question #126666 in Physics for Anas

Question #126666

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?


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Expert's answer
2020-07-20T14:56:49-0400

(a) The weighi of the object is:


W=mgW = mg

where mm is its mass and g=9.81m/s2g = 9.81 m/s^2 is the gravitational acceleration. Thus:


W=0.3kg9.81m/s2=2.943NW = 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=Fma = \dfrac{F}{m}

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


a=0.5N0.3kg1.67m/s2a = \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.


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