Total work done here against two forces
1. Work done against gravity
2. work done against friction
Here work done against gravity is given by
here we know that weight of the block will be
now we will say
as we know that total work
so work done against friction is 1 J
I believe it is Gravitational force, hope this helps
Earth around the sun and the moon around the earth
Answer:
The coefficient of linear expansion \°C
Explanation:
Given initial temperature °C
And final temperature °C
Initial length
Final length
We have to find the coefficient of linear expansion
The coefficient of linear expansion is defined as the change in length per unit original length divide by the change in temperature.
So, \°C