- Explain the types of work along with one example of each
Answers
Explanation:
Work: In physics work is said to be done when a force acting on a body displaces it through a certain distance. The work by a constant force is measured by the dot product of force will displacement.
i.e. W = F.S or W = F S cosq …(1)
where F = force and S = displacement
And q = angle between F and S.
From eq.(1), we have W=F cosq x S. Therefore, work done by a force is equal to the product of the component of the force in the direction of displacement of the body and the distance through which the body moves.
As work is the dot or scalar product of two vectors (force and displacement), therefore, it is a scalar quantity.
Answer:
3 types of work done
Explanation:
POSITIVE WORK :the work done on an object is said to be positive work when force and displacement are in same direction.
example: When an object moves on horizontal surface,force and displacement acts in forward direction. So,work done is positive.
NEGATIVE WORK:The work done is said to be negative work when force and displacement are in opposite direction.
example: When an object is thrown upwards,the force CTS in downward direction whereas displacement acts in upward direction.
ZERO WORK:The work done is said to be zero work when force and displacement are perpendicular to each other or when either force or displacement is zero.
example: When we hold an object and walk,the force acts in downward direction whereas displacement acts in forward direction.