What is the weight of a 90kg man standing on the moon, where gmoon = 1.64 m/s2?

A.

88.4 N

B.

91.6 N

C.

147.6 N

D.

54.9 N

The weigth of a 90kg man standing on the moon is 147.6 N (option C)

Explanation:

Weight is called the action exerted by the force of gravity on the body.

The mass (amount of matter that a body contains) of an object will always be the same, regardless of where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.

The formula that allows you to calculate the weight of any body is:

W = m*g

where:

W = weight measured in N. m = mass measured in kg. g = acceleration of gravity measured in m/s². The acceleration of gravity g is the same for all objects that fall due to gravitational attraction, whatever their size or composition. For example, as an approximate value on Earth, g = 9.8 m/s².

In this case, the mass m has a value of 90 kg and the gravity g has a value of 1.64 m/s², which is the value of the acceleration of gravity of the moon. Then:

W=90 kg * 1.64 m/s²

W = 147.6 N

Finally, the weigth of a 90kg man standing on the moon is 147.6 N (option C)