Best Answer

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.

Q: How long would it take a 7.5 kW motor to raise a 500 kg piano to an apartment window 1000 meters above the ground?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

The ball was thrown horizontally at 10 meters per sec, and the thrower's arm was 78.4 meters above the base of the cliff.

The two balloons are 150-10 = 140 metres apart. They are travelling towards each other at a speed of 15+20 = 35 metres per minute. 140 m at 35 m/minute takes 140/35 = 4 minutes.

At the end of the first day she is (3 - 2) = 1 meter above the bottom.At the end of the second day she is [ 1 + (3 - 2) ] = 2 meters above the bottom.At the end of the third day, she is [ 2 + (3 - 2) ] = 3 meters above the bottom....At the end of the 28th day she is 28 meters above the bottom, assuming she hasn't starved to death yet.During the 29th day, she is in the process of climbing up 3 meters, when she reaches the top and flops outonto the ground. This happens at some time during the 29th day.

Gravitational potential energy = Mass x gravity x heightTherefore, an object at ground level is 0 meters above the ground, thus having no potential energy.PE = mghm = massg = gravitational accelerationh = height

At the end of the first day she is (3 - 2) = 1 meter above the bottom.At the end of the second day she is [ 1 + (3 - 2) ] = 2 meters above the bottom.At the end of the third day, she is [ 2 + (3 - 2) ] = 3 meters above the bottom....At the end of the 28th day she is 28 meters above the bottom, assuming she hasn't starved to death yet.During the 29th day, she is in the process of climbing up 3 meters, when she reaches the top and flops outonto the ground. This happens at some time during the 29th day.===============================================Another contributor says:The Answer is 28 days not 29. The rabbitt would come out on the 28 day.

Related questions

To determine if the stone hits the window, calculate the trajectory of the stone using the vertical and horizontal components of its initial velocity. The time it takes for the stone to reach the window can be found using kinematic equations. If the time is sufficient for the stone to reach the height of the window, then it will hit the window.

I think a hotel that is floating thousands of meters above ground is bull and run by some wacko

It depends on how heigh the window sill is from the ground. it can be right above it, or far from the floor.

As , s = ut + 1/2 a t2 , since a ball is dropped , the equation is modified as h = ut + 1/2 g t2 Therefore , h = 0 x t + 1/2 x 9.8 x 22 [ u = 0 ,since the ball is at rest] h = 19.6 meters Height of the window = 19.6 meters

A 0.650 kg basketball is dropped out of a window that is 6.46 m above the ground. The ball is caught by a person whose hands are 1.32 m above the ground. How much work is done on the ball by its weight?

7.5 degrees

If a cat that has a mass of 4.50 kilograms sits on a ledge that is 0.800 meters above ground and it jumps down to the ground, it will have a specific amount of kinetic energy just as it reaches the ground. In this instance, the answer would be 35.3J.

As , s = ut + 1/2 a t2 , since a ball is dropped , the equation is modified as h = ut + 1/2 g t2 Therefore , h = 0 x t + 1/2 x 9.8 x 22 [ u = 0 ,since the ball is at rest] h = 19.6 meters Height of the window = 19.6 meters

The potential energy of an object with respect to the ground can be calculated using the formula PE = mgh, where m is the mass (20 kg), g is the acceleration due to gravity (approximately 9.81 m/s^2), and h is the height above the ground. If the mass is, for example, 2 meters above the ground, the potential energy would be approximately 392.4 J.

The peak in Rila called Musalla is at 2925 meters above the ground

a couple of hundred meters above sea level (can be less or more)

319 meters = 1046 feet high 77 floors above ground.