We could actually solve that if we knew ==> the weight of the piano,
and ==> the distance between floors.
The power is:
[ (weight of the piano in newtons) x (distance between floors in meters) / 10 ] watts.
36000J
420,000 j
Use the formula potential energy = mgh (mass x gravity x height), mass in kilograms, gravity about 9.8 (meters per square second), height in meters. Answer will be in Joules.
20 meters per second
That depends how high you lift it.The work is mgh (mass x gravity x height). If the mass is in kilograms, gravity is in newton/kilogram (Earth gravity is about 9.8 newton/kilogram), and the height is in meters, then the work will be in joules.
If you multiply the weight (mass x gravity) by the height, you get the energy required. (Note: gravity is about 9.8 newton / kilogram.) You then need to divide that by the time, to get the power.
420,000 j
Use the formula potential energy = mgh (mass x gravity x height), mass in kilograms, gravity about 9.8 (meters per square second), height in meters. Answer will be in Joules.
20 meters per second
(4 x 5) kilogram-meters = 20 joules
Gravitational potential energy relative to the ground =(mass) x (gravity) x (height above ground).Height = (PE)/(M x G)= 400/(3 x 9.8) = 13.6 meters (rounded)Now that we have all the figures, it would be interestingto speculate on whether there's anybody who could tossa 6.6-pound rock to 47 feet off the ground !
The bottom of the basketball net is 2.5908m-2.6176m from the ground.
20 meters per second
The conversion for Meters to Kilogram is the following: Xm = Ykg * µpi²
The original tower measures 320 metres from the ground to the tip. The addition of a radio transmitter in 1914, increased the overall height to 324 metres.
40 kilograms!
That depends how high you lift it.The work is mgh (mass x gravity x height). If the mass is in kilograms, gravity is in newton/kilogram (Earth gravity is about 9.8 newton/kilogram), and the height is in meters, then the work will be in joules.
If you multiply the weight (mass x gravity) by the height, you get the energy required. (Note: gravity is about 9.8 newton / kilogram.) You then need to divide that by the time, to get the power.