A pair of bullocks exerts a force of 140N on a plough. The field being ploughed is 15m long. How much work is done in ploughing the length of the field?
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Question
A pair of bullocks exerts a force of 140N on a plough. The field being ploughed is 15m long. How much work is done in ploughing the length of the field.?
Given
- A pair of bullocks exerts a force of 140N on a plough.
- The field being ploughed is 15m long.
Required to Find
How much work is done in ploughing the length of the field ?
Solution
W = F × S
= 140 N × 15 m
= 2100N/m
= 2100J
More
Types of force in science
- Applied force
- Gravitational force
- Normal force
- Frictional force
- Air resistance force
- tension Force
- spring force
Applied force
allied force is a force that is applied to an object by a person or another object
Gravitational force
When objects which have mass are attracted to eachother, the the force between them is known as gravitational force.
normal force
normal is the force that surface exert to prevent solid objects from passing through each other .
frictional force
friction is a resistance to motion of an object moving relative to another, it is not a fundamental force like gravity or electromagnetism .
air resistance force
a resistance is a force that is caused by the force acts in the opposite direction to an object moving through the air