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? Remember that a= 9.8 m/s 2 .(1 point) Responses
A. 10.2 N
B. 109.8 N
C. 9800 N
D. 980 N
The correct answer is D. 980 N.
The force required to lift an object against the force of gravity can be calculated using the equation F = mg, where F is the force, m is the mass of the object, and g is the acceleration due to gravity.
In this case, the mass of the bar is given as 100 kg. The acceleration due to gravity is 9.8 m/s^2. Therefore, the force required to lift the bar is:
F = 100 kg × 9.8 m/s^2 = 980 N