How much work is done to lift 5kg box to a vertical height of1.5m
m * g * h ... answer is in Joules
IDK the answer
To calculate the work done in lifting a 5kg box to a vertical height of 1.5m, you need to use the formula for work:
Work = Force × Distance × cos(θ)
In this case, the force is equal to the weight of the box, which is the product of mass (5kg) and the acceleration due to gravity (9.8m/s^2). So, the force exerted to lift the box is:
Force = Mass × Acceleration due to gravity
Force = 5kg × 9.8m/s^2
Next, you need to calculate the cos(θ), where θ is the angle between the force and the direction of motion. Since the box is being lifted vertically, the angle between the force (upward) and the direction of motion (also upward) is 0 degrees. Therefore, cos(0) is equal to 1.
Now, substitute the values into the work formula:
Work = Force × Distance × cos(θ)
Work = (5kg × 9.8m/s^2) × 1.5m × cos(0)
Work = 49kg·m^2/s^2 × 1.5m × 1
Simplifying the equation:
Work = 73.5 Joules
So, the amount of work done to lift a 5kg box to a vertical height of 1.5m is 73.5 Joules.