Question

Question 5: Describe why pulling a heavy object seems more hazardous than pushing it.

Question 6: What is the difference between local and whole body strength?

Answer 1

Answer:5

Pulling the heavy object seems more hazardous than pushing it because the amount of force applied during a pull is more than the amount of force applied during a push.

While, pulling the heavy object the applied force and the friction force both acts in same direction and hence, the net pull force is very high as compared to the force needed to move the object.

While pushing the applied force and the friction force both acts in opposite direction and hence, the net pull force is very low as compared to the force needed to move the object. The amount of force applied have effect on the muscles of the man hence, the pull force on a heavy object seems more hazardous than pushing it.

Answer 6:

The local body strength is the strength of a particular part of the body. The local strength of the body can vary from location to location on the body due to the presence of notches, bends, curves and the variation of the density of the material. It represents the amount of force per unit area that the particular location can withstand without rupture.

The whole body strength is the strength of the whole body that is the mean of the strength that can be possessed by the body. The whole body strength is the minimum value of the strength that the body possesses. It represents the maximum amount of force per unit area that the body can withstand without rupture.