Question

5.2.2 What advantage will the man have , by using the pulley system , instead of just picking it up?

5.3 what is this function of a crank?

5.4 Complete the sentence:

A crank __________ mechanical advantage by increasing the _______ between the _________ and central shaft . [increase , decrease , handle , distance]

5.5 Name TWO example of where crank are used in machines.

Answer 1

5.2.2 The advantage the man will have by using the pulley system instead of just picking it up is that the pulley system reduces the amount of force required to lift the weight. By distributing the weight over multiple ropes and allowing for changes in direction, the man can lift heavier loads with less effort.

5.3 The function of a crank is to convert rotational motion into linear motion, allowing force to be applied in a different direction or to move an object in a straight line.

5.4 Complete the sentence: A crank **increases** mechanical advantage by increasing the **distance** between the **handle** and central shaft.

5.5 Two examples of where cranks are used in machines are:
1. The hand crank on a bicycle that converts pedaling motion into wheel rotation.
2. The crank used in a car engine to convert rotational motion into the linear motion of pistons.