Question

work done in lifting a body of mass 5kg vertically through 9m is​

Answer 1

Answer:

g=10ms-2

since, Work= Energy

so W=E=mgh

=5kg × 10 × 9m

=450J

Answer 2

It takes 441.45 J of work to move a body of mass 5 kg via a distance of 9 m.

The product of the applied force and the distance travelled in the direction of the force determines the labour involved in elevating a body vertically via a specific distance.

In this instance, the force exerted is equal to the body's weight, which is determined by:

Mass times Gravity = Weight

with mass equal to 5 kg and gravity equal to 9.81 m/s2 (acceleration due to gravity)

5 kg x 9.81 m/s2 = 49.05 N is the weight.

9 metres have been moved in the force's direction.

As a result, the following labour is involved in elevating the body vertically through 9m:

Work Equals Force times Distance

Work = 49.05 x 9 x N

441.45 Joules of work (J)

Hence, it takes 441.45 J of work to move a body of mass 5 kg via a distance of 9 m.

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