work
what is th formula of work
w=F*d
push a table to a certain distance is this work?
yes
example of 0 work done
holding a bag and moving
while playing cricket, if we hit a ball with a bat is there any work done?
yes, force is exerted on the ball and that ball is displaced
what are the conditions to be satisfied for work to be done?
1-a force should act on an object
2-the object must be displaced
a student lifts a school bag from the ground is this work? why
yes, because force is exerted on the bag
the bag is displaced
At a playground, a child sitting in a toy cart is pulled forward by her friend, who pulls the cart with a force of 60 N along a rope attached to the cart. Calculate work done by the child’s friend to pull the child forward by 20 m.
w= f*d
w= 60*20
A force of 10 N acts through a distance 10 m in the direction of the force.
Calculate the work done by the force?
W=F×d=10×10=100J
the work done by a force is 500J by moving a distance 10 m
calculate the force
w=f*d
f=w/d=50 N