Answer:
(a). The work done is 472 J.
(b). The force exerted is 2.76 kN.
Explanation:
Given that,
Distance = 17.1 cm
Mass of object = 281.5 kg
(a). We need to calculate the work done
Using formula of work done


Where, m = mass
g = acceleration due to gravity
d = distance
Put the value into the formula


The work done is 472 J.
(b). We need to calculate the force
Using action reaction principle


Put the value into the formula


The force exerted is 2.76 kN.
Hence, (a). The work done is 472 J.
(b). The force exerted is 2.76 kN.