Calculating Force in Lifting a 2.0kg Object

In summary, the person does 100 J of work by lifting the 2.0 kg object 10 m at a constant speed of 2.0 m/s for 5.0 s. The acceleration of the system would be 0 since the object is being lifted at constant speed. The net force on the object would be 0 as well, since the force applied by the person is equal to the weight of the object. Therefore, the formula w=mgh can be used to find the force applied by the person.
  • #1
je55ica7
19
0
How much work is done by a person lifting a 2.0kg object from the bottom of a well at a constant speed of 2.0 m/s for 5.0s?

I know w=fd. I found the distance to be 10m. But what is the force? F=ma so what is the acceleration of the system?
 
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  • #2
Since the object is being lifted at constant speed, what does that tell you about the acceleration? What's the net force on the object? (There are two forces acting on the object: the force applied by the person and the weight of the object.)
 
  • #3
Wouldn't that mean that the acceleration is 0? So would I use w=mgh?
 
  • #4
Yes and yes.
 

Related to Calculating Force in Lifting a 2.0kg Object

What is force?

Force is a physical quantity that describes the strength or energy exerted on an object. It is measured in units called Newtons (N).

How do you calculate force?

Force is calculated by multiplying the mass of an object (in kilograms) by its acceleration (in meters per second squared). The formula for force is F = m x a.

What is the mass of a 2.0kg object?

The mass of a 2.0kg object is 2.0 kilograms. Mass is a measurement of an object's resistance to changes in its motion.

What is the acceleration of a 2.0kg object?

The acceleration of a 2.0kg object is dependent on the force being applied to it and the object's mass. Using the formula for force (F = m x a), we can rearrange it to find the acceleration (a = F/m). Therefore, the acceleration of a 2.0kg object would depend on the force being applied to it.

How much force is needed to lift a 2.0kg object?

The amount of force needed to lift a 2.0kg object will depend on the acceleration due to gravity, which is approximately 9.8 meters per second squared. Using the formula for force (F = m x a), we can calculate that the force needed to lift a 2.0kg object on Earth would be approximately 19.6 Newtons.

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