Physics

Problem

A block of mass

3\,\text{kg}

is moved near the Earth’s surface from point

A(0,0)

to point

B(4\,\text{m},\;3\,\text{m})

with the

y

-axis taken vertically upward. (a) Calculate the work done by the gravitational force if the block is moved first horizontally from

x=0

x=4\,\text{m}

and then vertically from

y=0

y=3\,\text{m}

. (b) Calculate the work done by the gravitational force if the block is moved directly along the straight line from

A

B

. (c) State whether the two results are equal or different. a. (a) b. (b) c. (c)