Answer :
Final answer:
The gravitational force acting on the 56 kg workbench is closest to 560 N, calculated by multiplying the mass by the acceleration due to gravity.
Explanation:
The question asks to calculate the gravitational force acting on the workbench, which has a mass of 56 kg and a mass center at g. The formula to find the gravitational force (weight) acting on an object is F = m × g, where F is the force, m is the mass of the object, and g is the acceleration due to gravity (9.8 m/s2 on Earth). Therefore, the gravitational force is F = 56 kg × 9.8 m/s2 = 548.8 N. This value is closest to the given option (a) 560 N.
