physcial science
posted by jake .
a 50 kg crate is lifted to a height of 10 meters.
a. how much potential energy does the crate have after being lifted?
b. if it took 5 seconds to lift the crate, using a machine what was the power rating of the machine?

a) Work = Force x Distance
The Force in this case is Mass*(acceleration of gravity), so
Work = 50 kg*9.8 m/s^2*10 m = __ Newtons
b) Power = Work/Time 
one half second after starting from rest, a free falling oblect will have a speed of about what?

homogeneous mixture
Respond to this Question
Similar Questions

physical science
a 50kg crate is lifted to a height of 10 meters. how much potential energy does the crate have after being lifted? 
science
a 50kg crate is lifted to a height of 10 meters how much potential energy does the crate have after being lifted? 
physical science
A 50 kg crate is lifted to a height of 10 meters.How much potential energy does the crate have begin lifted? 
Physics
A crate of a mass 150 kg is lifted onto a truck 2.5 m above the ground. How much potential energy has the crate gained? 
Physical Science
an initially stationary 15.0 kg crate of cheese wheels is pulled via a cable a distance d = 5.70 m up a frictionless ramp to a height of h = 2.5 m, where it stops. What is its potential energy of the crate after it is lifted? 
physics
An initially stationary 15.0kg crate of cheese wheels is pulled via a cable a distance d= 5.70m up a frictionless ramp to a height of h= 2.50m, where it stops. What is the potential energy of the crate after it is lifted? 
physics
refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? 
physics
refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? 
physics
refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? 
physics
refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is?