Answer :
Answer:
3.36J
Explanation:
Step one:
given data
mass m= 1.3kg
distance moved s= 2.8m
opposing frictional force= 0.34N
assume g= 9.81m/s^2
we know that work done= force *distance moved
1. work done to push the book= 1.55*2.8=4.34J
2. Work against friction = force of friction x distance
= 0.34*2.8=0.952J
Step two:
the work done on the book is the net work, which is
Network done= work done to push the book- Work against friction
Network done= 4.32-0.952=3.36J
Therefore the work of the 1.55N 3.36J
The work done by the 1.55 N push on the physics book over a distance of 2.80 m is 4.34 Joules.
The question involves calculating the work done by a push force on a physics book against friction. Work is defined as the product of the force and the distance moved in the direction of the force. Hence, the work done by the 1.55 N push on the book can be found by multiplying this force by the distance over which it acts, 2.80 m. It is given by the formula:
Work done = Force imes Distanc
Substituting the given values:
Work done = 1.55 N imes 2.80 m = 4.34 Joules
