Here the block has two work done on it
1. Work done by gravity
2. Work done by friction force
So here it start from height "h" and then again raise to height hA after compressing the spring
So work done by the gravity is given as
Now work done by the friction force is to be calculated by finding total path length because friction force is a non conservative force and its work depends on total path
Total work done on it
So answer will be
None of these
At a distance of 1.33 m 250-N load be hung on the pole, such that the father will carry twice the load of his son.
<h3>What is torque?</h3>Torque is the force's twisting action about the axis of rotation. Torque is the term used to describe the instant of force. It is the rotational equivalent of force.
Torque about the left end ;
From the observation,
After rearranging equation, we get;
Substitute the value of the obtained force we get;
x=1.33 m
Hence, at a distance of 1.33 m ,250-N load be hung on the pole, such that the father will carry twice the load of his son.
To learn more about the torque refer to the link;
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