If an object has a mass of 20 kg on a planet with a force of gravity of 4 m/s2. What is the object's weight?
**Remember** W=mg
a
5 N
b
200 N
c
80 N
d
0.2 N
W=mg
Where:
W = weight
m = mass
g = force of gravity
Given:
m = 20 kg (mass of the object)
g = 4 m/s^2 (force of gravity on the planet)
Thus,
W = mg
W = 20 kg x 4 m/s^2
W = 80 N
Therefore, the answer is option C, 80 N.
To find out the weight of the object, we can use the formula W = mg, where W represents the weight, m represents the mass, and g represents the force of gravity.
Given:
Mass (m) = 20 kg
Force of gravity (g) = 4 m/s^2
To find the weight (W):
W = mg
W = 20 kg × 4 m/s^2
W = 80 N
Therefore, the object's weight is 80 N.
Answer: c) 80 N
To calculate the weight of an object, you need to multiply its mass by the force of gravity. The formula is W = mg, where W represents weight, m represents mass, and g represents the force of gravity.
In this scenario, the mass of the object is given as 20 kg, and the force of gravity on the planet is 4 m/s^2. Using the formula W = mg, we can substitute the given values:
W = 20 kg * 4 m/s^2
Multiplying 20 kg by 4 m/s^2 results in:
W = 80 kg*m/s^2
The unit kg*m/s^2 is equivalent to the unit of force, which is a Newton (N). Therefore, the weight of the object is 80 N.
So, the correct answer is option c) 80 N.