Question

11. A student lifts a 25 kg mass a vertical distance of 1.6 m in a time of 2.0 seconds. a. Find the force needed to lift the mass (in N).

Answer 1

A student lifting a mass of 25Kg in vertical distance of 1.6 m in a time of 2.0 seconds requires a force of 245.25 N to lift the mass.

Step-by-step explanation:

Given:

Mass m=25 kg

distance d =1.6 m

time= 2.0 seconds

To find :

Force required to lift the mass=?

We know

`F = ma =mg`

where

g is a gravitational foce and is a constant
`g= 9.81ms^2`

`F = ma`

Also
`F=mg`

substituting the given values,

`F=(25kg)(9.81ms^2)`

`F = 245.25N`

Result:

Thus ,a student lifting a mass of 25Kg in vertical distance of 1.6 m in a time of 2.0 seconds requires a force of 245.25 N to lift the mass.

Answer 2

245 Newtons

Step-by-step explanation:

The force needed is simply the same as that of gravity for an object with mass 25. That is: mass times g, which in this case gives 25 kg times 9,8 m/squared seconds. And that equals 245 Newtons.