Final answer:
The weight of a 46 kg barbell in newtons is calculated by multiplying the mass (46 kg) by the acceleration due to gravity (9.81 m/s²), resulting in approximately 451.26 N.
Step-by-step explanation:
To calculate the weight of a 46 kg barbell in newtons, you need to multiply the mass of the barbell by the acceleration due to gravity. The acceleration due to gravity is approximately 9.81 m/s² on the surface of the Earth. Therefore, the weight W in newtons is calculated using the formula W = m × g, where m is the mass in kilograms and g is the acceleration due to gravity in meters per second squared.
Using the formula, the weight of the barbell in newtons is:
W = 46 kg × 9.81 m/s² = 451.26 N.
This result shows that a 46 kg barbell weighs approximately 451.26 newtons.