How much work is done if I hold 490 N weight still above my head 2 m off the ground ?

Work done, W = 0 J.

Explanation:

Given data:

Weight,

Height,

The work done by a force can be expressed as,

Here,

W = work done

F = magnitude of applied force

d = displacement

= angle between the applied force and the displacement

Since the weight is still, therefore the magnitude of the displacement is zero.

Hence, the work done by the weight would be zero.

a electromagnetic waves

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.