Calculate the work done in each of the following situations.

(a) A horse pulls a wagon with a force of 1200 N and moves it 15 m.
(b) A cable lifts an elevator 16 m by using a cable with a tension force of 2500 N.
-How much work is required to lift a 35-kg object from the ground 3.0 m into the air?
-How much gravitational potential energy did this object gain?

Im doing the same question and i am still confused?

a. 1200*15

b. 2500*16
d. 35*9.8*3
e. same as in above.

hi kind sir

hi my names bob

Where does 9.8 come from?

To calculate the work done in each situation, you need to use the formula:

Work = Force × Distance × cos(theta)

where Force is the magnitude of the force applied, Distance is the distance over which the force is applied, and theta is the angle between the direction of the force and the displacement.

(a) In the first situation, a horse pulls a wagon with a force of 1200 N and moves it 15 m. Since the force and displacement are in the same direction, theta is 0 degrees.

Work = 1200 N × 15 m × cos(0°)
Work = 18,000 Joules

Therefore, the work done by the horse in pulling the wagon is 18,000 Joules.

(b) In the second situation, a cable lifts an elevator 16 m using a tension force of 2500 N. Since the force and displacement are in the same direction, theta is 0 degrees.

Work = 2500 N × 16 m × cos(0°)
Work = 40,000 Joules

Therefore, the work done by the cable in lifting the elevator is 40,000 Joules.

To calculate the work required to lift a 35-kg object from the ground 3.0 m into the air, you need to use the formula:

Work = Force × Distance

Since the object is being lifted against gravity, you need to consider the force required to overcome the gravitational force.

Force = Mass × Acceleration due to gravity
Force = 35 kg × 9.8 m/s^2
Force = 343 N

Work = 343 N × 3.0 m
Work = 1029 Joules

Therefore, the work required to lift the 35-kg object is 1029 Joules.

To calculate the gravitational potential energy gained by the object, you need to use the formula:

Gravitational Potential Energy = Mass × Acceleration due to gravity × Height

Since the object is being lifted vertically, the height is 3.0 m.

Gravitational Potential Energy = 35 kg × 9.8 m/s^2 × 3.0 m
Gravitational Potential Energy = 1029 Joules

Therefore, the object gained 1029 Joules of gravitational potential energy.

if you square root the air quality by the formula of the sound barrier, you will get the answer.