An cyclist on an asphalt road is to make a turn about a curve. What are the forces present causing the circular motion?
The centripetal force towards the turning axis and the weight of the cyclist.
The pedaling force of the cyclist forward and the weight of the cyclist that is partially tilted.
The centripetal force and the pedaling force.
The friction of the tires and the pedaling force.
The friction of the tires and the weight of the cyclist.
The correct answer is: The centripetal force towards the turning axis and the weight of the cyclist.
Which of the following statement(s) is/are true regarding boiling water?
The lower the atmospheric pressure, the more difficult it is to boil water.
The lower the atmospheric pressure, the easier it is to boil water.
It is possible to boil water below 100°C.
It is possible for water to reach 100°C before boiling.
Water will always boil at 100° regardless of any environmental conditions,
The true statements regarding boiling water are:
- The lower the atmospheric pressure, the easier it is to boil water.
- It is possible to boil water below 100°C.
- It is possible for water to reach 100°C before boiling.
The correct answer is: The centripetal force towards the turning axis and the weight of the cyclist.
When a cyclist makes a turn about a curve, the forces present causing the circular motion are the centripetal force towards the turning axis and the weight of the cyclist. The centripetal force is directed towards the center of the curve and keeps the cyclist moving in a circular path. Weight, on the other hand, is a downward force acting vertically due to gravity.