How much work is done when a 48-kg stack of books are lifted 2m with a net force of 25 n ?
a. 12.4 j
b. 100 j
c. 50 j
d. 96 j

C). W = 50 J

Explanation:

As we know that the work done is the product of force and displacement

so here it is given that the net force on the stack of books is 25 N

also the displacement of the stack of books is 2m as it is lifted upwards

so we have

now by the formula of work done we know

now plug in all values in it

see earlier

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.