A5.7 kg bucket of water is raised from a well by a rope. the acceleration of gravity is 9.81 m/s 2 . if the upward acceleration of the bucket is 2.2 m/s2 , find the force exerted by the rope on the bucket of water. answer in units of n.

Force exerted by rope will be 68.457 N

Explanation:

Mass of the bucket = 5.7 kg

Acceleration due to gravity

Upward acceleration

We have to find the force exerted by the rope means tension in the rope

Tension in the rope is given by

So force exerted by rope will be 68.457 N

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.