A high school athlete is in the weight room training for wrestling season. He is trying to bench press a bar loaded with 100 kg. How much force must he exert to lift the loaded bar and overcome the force of gravity?

Question

Remember that a= 9.8 m/s2
.(1 point)
Responses

10.2 N
10.2 N

109.8 N
109.8 N

9800 N
9800 N

980 N

Answer 1

To calculate the force the athlete must exert to lift the barbell loaded with 100 kg and overcome the force of gravity, we can use Newton's second law of motion (F = m * a).

Here:

• \( m = 100 \) kg (mass of the barbell)
• \( a = 9.8 \) m/s² (acceleration due to gravity)

Now, we can calculate the force \( F \):

\[ F = m \times a \] \[ F = 100 , \text{kg} \times 9.8 , \text{m/s}^2 \] \[ F = 980 , \text{N} \]

So, the correct response is:

980 N