Monday, February 9, 2009
♥ Force And Work
The work done by a force measures the amount of energy being changed from one form to another as the work is done.
The unit of work done is the joule(J). This is also the unit for energy.
Formula: Work done = Force X Distance moved 1 joule = 1 Newton X 1 metre 1J = 1 N m
One joule is the amount of work done when a force of one Newton moves an object by one metre in the direction of the force.
Example: Marie lifts a 5kg mass from the floor and puts it on a table one metre high. What is the work done? Solution: Work done = Force X Distance moved = (5X10)N X 1m = 50 N m = 50 J Therefore, the work done is 50 J.
The unit of work done is the joule(J). This is also the unit for energy.
Formula: Work done = Force X Distance moved 1 joule = 1 Newton X 1 metre 1J = 1 N m
One joule is the amount of work done when a force of one Newton moves an object by one metre in the direction of the force.
Example: Marie lifts a 5kg mass from the floor and puts it on a table one metre high. What is the work done? Solution: Work done = Force X Distance moved = (5X10)N X 1m = 50 N m = 50 J Therefore, the work done is 50 J.
4:42 AM
