| Question Answer | How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s? 200 x 10 = 2000 x 2m = 4000/4 = 1000 Watts | Raising an auto in a service station requires work. Raising it twice as high in the same time requires twice the power |
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How much power is required to raise a 200kg crate?
| Question Answer | How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s? 200 x 10 = 2000 x 2m = 4000/4 = 1000 Watts | Raising an auto in a service station requires work. Raising it twice as high in the same time requires twice the power |
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How much energy does it take to lift 1kg?
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.
How do you calculate the energy needed to lift an object?
If the object is lifted straight up at constant speed, then the force needed to lift it is equal to its weight mg. The work done on the mass is then W = Fd = mgh . We define this to be the gravitational potential energy (PE g ) put into (or gained by) the object-Earth system.
What energy is used to lift?
Lift cars possess gravitational potential energy (GPE) , which is the energy that an object possesses depending on how far the object is from Earth. A lift that is high up has a greater GPE than if it was lower.
How many Newtons does it take to lift a kg?
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.
How much force is needed to lift the 10Kg weight?
How much force is needed to lift the 10Kg weight? The correct answer is (B) 5 Kg . In a double-pulley system, the force is equal to the weight divided by two. It will require a 5 Kg force to lift a 10Kg weight.
What is work done formula?
Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. ... If the force is being exerted at an angle θ to the displacement, the work done is W = fd cos θ.
How do you calculate GPE?
Gravitational potential energy changes into kinetic energy. The equation for gravitational potential energy is GPE = mgh , where m is the mass in kilograms, g is the acceleration due to gravity (9.8 on Earth), and h is the height above the ground in meters.
How much work is the weightlifter doing in lifting the weights?
In the above example, the work done by the weight lifter in lifting the weights was 980 joules . In order to do this work energy had to be transferred. 980 joules of chemical energy from food eaten by the weight lifter was transferred to 980 joules of gravitational potential energy to the barbell.
Does lifting weights require energy?
The person uses chemical energy to contract their muscles and raise the weights. The energy is potential energy at the peak of the lift.
What energy does a trampoline transfer?
As you leave the trampoline and you begin traveling upward, your kinetic energy decreases the higher up you go. In other words, you slow down. As you slow down and gain height your kinetic energy is transferred into potential energy .
How much force is needed to lift a 25 kg?
(Note: The weight of a 25-kg object is approximately 250 N ; it takes 250 N to lift the object up.)
How much work is required to lift a 2 kg mass to a height of 10 meters?
the Work done to life the mass of 2 kg to a height of 10 m is 196 J .
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.
