# physics

posted by .

a 400 kg crate is to be lifted a height of 20 m in 30 s. Compute the work done and the power consumed in lifting the crate

• physics -

Weight = M g H = 8000*g = ___ J
Divide that product by the time (30 s) to get the power in watts.

## Similar Questions

1. ### Physics

A 4.00kg crate is slowly lifted to a height of 1.50m. a.How much work is done by the lifting force?
2. ### physcial science

a 50 kg crate is lifted to a height of 10 meters. a. how much potential energy does the crate have after being lifted?
3. ### Physics

A man uses a pulley arrangement to lift a heavy crate.He applies a force that is one-fourth the weight of the crate, but moves the rope a distance four times the height that the create is lifted. Is the work done by the man greater …
4. ### 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?
5. ### physics

An initially stationary 15.0-kg 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?
6. ### 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?
7. ### 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?
8. ### 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?
9. ### 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?
10. ### physics- energy and work

To push a 33.0-kg crate up a frictionless incline angled at 27.0° to the horizontal, a worker exerts a force of 388 N parallel to the incline. The crate moves a distance of 4.10 m. What work is done on the crate by the worker?

More Similar Questions