## Is power the rate at which work is performed?

Power is the rate at which work is done. It is the work/time ratio. Mathematically, it is computed using the following equation. The standard metric unit of power is the Watt.

## How do we measure the rate of doing work?

The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work. A newton-meter is the same thing as a joule, so the units for work are the same as those for energy – joules.

## Which term is the rate at which work is done energy power joules force?

The unit of power is joules per second or J/s when work is measured in joules and time in seconds. The basic unit of power, 1 J/s is called a watt (W), named after James Watt who made important improvements to the steam engine. By definition, a watt is the consumption of one joule of energy per second.

10 Watts

## How much power does a lift use?

one unit costing 7–10 Rs. is 1 kwh. So if a 3.75 kw motor runs for 1 hour it will consume 3.75 units of electricity. To run 1 hour the lift can make 240 trips one way for 4 floors or it can go up and down 120 times.

9.8 Newtons

5 Kg force

## How much is 1kg force?

On Earth, an object with a mass of 1kg will experience a force of 10N due to gravity, i.e. the weight of a 1kg mass is 10N.

## How much energy does it take to lift 1kg 1m?

On earth it takes about 10 Newton-meters (N-m) of energy to raise a 1 kilogram mass to a height of 1 meter. Since 1 N-m equals 1 Joule, that’s 10 Joules. If it takes 1 second to lift the weight 1 meter, than you have converted 10 Joules of energy to potential energy in one second. That’s 10 Watts of power.

## How long will it take a 2.5 KW motor to lift a 80 kg block 30 m high?

Motor will take 9.4 s to lift block. Work done by motor to lift block is equal to change in gravitational potential energy of block.

## How much power is required to lift a body of 50kg?

So, the body will posses 4900 joules of energy. It is the required solution.

## What is the rate at which work is done in lifting a 35?

Explanation: The rate at which work is done is also the power dissipated in lifting the object at that constant speed. Therefore, the the rate at which work is done in lifting the object vertically at a constant speed of 5 m/s is 1,700 W.

## How much work is done on a 300 Newton suitcase to lift it 0.50 meter?

Work done is force multiplied by distance, Hence work done is 300×0.50=150 joules.

## How much work is required to lift a 10 Newton?

In the diagram, 55 joules of work is needed to raise a 10-newton 5.0 meters.

## How much work is required to lift a 2 kg mass to a height of 10 meters?

Answer. Answer: the Work done to life the mass of 2 kg to a height of 10 m is 196 J.

## At what constant speed can a 2000 watt motor?

A 2 000 W motor working at full capacity can vertically lift a 400 N weight at a constant speed of 4 m/s.

## Which body is in equilibrium a satellite moving?

Answer Expert Verified “(1) a satellite moving around Earth in a circular orbit” is the only option from the list that describes an object in equilibrium, since velocity and gravity are working together to keep the orbit constant.

## What is the amount of work done against gravity?

The work done on the mass is then W = Fd = mgh. We define this to be the gravitational potential energy (PEg) put into (or gained by) the object-Earth system. This energy is associated with the state of separation between two objects that attract each other by the gravitational force.

## What is the maximum height to which a motor having a power rating of 20.4 watts can lift a 5.00-kilogram stone vertically in 10.0 seconds?

V=15m/s P=? P-FVEWOON (158) = 9000w 84. What is the maximum height to which a motor having a power rating of 20.4 watts can lift a 5.00-kilogram stone vertically in 10.0 seconds? -2.16m Page 5 Topic 4A: Skill 30 85.

## What is the average power developed?

The force is in the vertical motion, and since the movement of the mass is at constant speed the force is: Hence, the average power is: Therefore, the average power developed by a motor is 4905 Watts.

## What is the power output of an electric motor that lifts a 2.0 kilogram block?

What is the power output of an electric motor that lifts a 2.0-kilogram block 15 meters vertically in 6.0 seconds? mad. lzkaXq.

## What is the acceleration due to gravity at a location where a 15.0 kilogram?

Answer Expert Verified Weight = (mass) x (acceleration of gravity) . 45 N = (15 kg) x (acceleration of gravity) . = 3 m/s² .

## What is the weight of a 5 kg object on earth?

For instance, on Earth, a 5.0-kg object weighs 49 N; on the Moon, where g is 1.67 m/s2, the object weighs 8.4 N.

## How is centripetal force calculated?

According to Newton’s second law of motion, net force is mass times acceleration: net F = ma. For uniform circular motion, the acceleration is the centripetal acceleration—a = ac. Thus, the magnitude of centripetal force Fc is Fc = mac.

## What is the weight of a 2 kg object on earth?

A 2.00-kilogram object weighs 19.6 newtons on Earth.

## How many newtons is 2 kg?

Kilogram-force to Newton Conversion Table

Kilogram-force [kgf] Newton [N]
0.1 kgf 0.980665 N
1 kgf 9.80665 N
2 kgf 19.6133 N
3 kgf N

## What things weigh 2kg?

How heavy is 2 kilograms?

• It’s about nine-tenths as heavy as a Chihuahua.
• It’s about seven-tenths as heavy as a Brick.
• It’s about one-and-a-half times as heavy as a Human Brain.
• It’s about twice as heavy as a liter of Water.
• It’s about two-fifths as heavy as a Gallon of Paint.
• It’s about two-fifths as heavy as a Cat.