If a force F (measured in newtons, N) is applied to move an object a distance d (measured in metres, m) in the direction of the line of force, the work done W (measured in joules, J) is given by:
W = F d
Crucially, d is the distance moved in the direction of the line of force. Assuming the force is applied parallel to the ramp:
W = 425 N x 2 m
= 850 J
The work done to push the piano up the ramp is the force multiplied by the distance moved in the direction of the force, which gives 6000 J. Because work done is force times distance and the force applied is 200 N, the distance covered will be 30 meters. This means that the mover has to apply a force of 200 N to push the piano up the ramp over a distance of 30 meters.
5000 joules
If two students are exerting a force in the same direction to move a piano, you can determine the net force by simply adding their individual forces together. The net force is the sum of the forces exerted by both students.
The work done is calculated as the force applied multiplied by the distance moved in the direction of the force. So, the work done in this case is 400 N * 5 m = 2000 Joules.
Power is equal to work done divided by time, where work done is force multiplied by distance. In this case, the work done is 100 newtons * 10 meters = 1000 joules. Therefore, the power used would be 1000 joules / 5 seconds = 200 watts.
Some of My Best Friends Are...The Piano Players was created in 1994.
-- angle the ramp makes with the ground -- weight of the piano -- height above ground at the top of the ramp -- horizontal distance between the beginning and end of the ramp If the question included any one of these pieces of information, an answer could be calculated. But with only the information given, it can't be.
The force applied to a 300 pound piano would depend on how it is being moved or manipulated. If you are simply pushing it on a level surface, the force would be determined by the friction between the piano and the surface. If you are lifting or carrying the piano, the force would depend on the distribution of weight and the technique used.
The net force for the falling piano was 30 N.
A force of 100 newtons acting through a distance of 10 metersresults in 1,000 joules of energy transferred.If it all takes place in 10 seconds then the average rate of energytransfer (power) during that interval is(1,000/10) = 100 joules per second = 100 watts.
singing, dancing, playing the piano and talking to friends.
The motor provides energy at the rate of 7500 Joules each second. The energy needed to raise the piano = mass of the piano x acceleration due to gravity x height = 500 x 9.81 x 1000 = 4.905 x 106 Joules time taken = 4.905 x 106 / 7500 = 654 seconds So, it would take around 11 minutes.