1. According to science work is done only when force is applied and the object shows some displacement from its initial place.
2. The mechanical advantage of an inclined plane is the ratio of the length of the plank to the vertical height of the load raised. Its value is greater than one. Therefore, an inclined plane acts as a force multiplier. Thus, it can be used to lift heavy loads.
3. In third class lever effort is applied between fulcrum and load.
So, if larger force applied, the load that is farther distance than effort from the fulcrum, travels more fast.
4. Moving parts should be oiled or greased so as to minimize the friction between parts.
Answers & Comments
Answer:
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Explanation:
1. According to science work is done only when force is applied and the object shows some displacement from its initial place.
2. The mechanical advantage of an inclined plane is the ratio of the length of the plank to the vertical height of the load raised. Its value is greater than one. Therefore, an inclined plane acts as a force multiplier. Thus, it can be used to lift heavy loads.
3. In third class lever effort is applied between fulcrum and load.
So, if larger force applied, the load that is farther distance than effort from the fulcrum, travels more fast.
4. Moving parts should be oiled or greased so as to minimize the friction between parts.