1. How much (Power/Force) is required to lift 8Kg 12meters up within 15sec?
2. Can you tell me difference Power Force from that question or anyway simple?
force = m g = 8 (9.81)
work = potential energy gained = m g h = 8 (9.81)(12)
power = work/time
= 8 (9.81)(12)/15
If for some incomprehensible reason you really ant power/force, divide
12/15
im trying to understand difference between power and force. if force is 8x9.8 thn there will be downforce. but this mass is going up which should be counter to the downforce. so liftforce is clearly greater thn downforce. Please explain clearly.
I assume that the mass is going up at constant speed. Therefore the force is m*g up to balance the weight of m*g down.
Power is another thing entirely, energy per unit time.
To find the power required to lift an object, we need to calculate the work done in lifting the object first. Work is calculated using the formula:
Work = Force x Distance
In this case, the distance lifted is 12 meters and the object has a mass of 8 kg. To determine the force required, we can use the formula:
Force = Mass x Acceleration due to gravity
The acceleration due to gravity is approximately 9.8 meters per second squared.
1. To calculate the force, we can substitute the values into the formula:
Force = 8 kg x 9.8 m/s^2
Force = 78.4 Newtons (N)
Now that we know the force required, we can calculate the power using the formula:
Power = Work / Time
2. Power is a measure of how quickly work is done or energy is transferred. It is the rate at which work is done or the rate of energy transfer. In the context of the question, power is calculated by dividing the work done (force x distance) by the time taken.
Force is the push or pull applied to an object in order to accelerate it. It is measured in Newtons (N). In the question, force is the product of mass and acceleration due to gravity.
So, in summary:
- Power is the rate at which work is done or energy is transferred.
- Force is the push or pull applied to an object to accelerate it, and it is measured in Newtons (N).
I hope this explanation helps!