A large crate weighing 850 N is slid across the floor of a shop. To move the crate 15 m at a steady spead of 10 cm/s, a constant horizontal force of 80 N is applied to the crate. How much work was done in moving the crate?
W = Fd = 80 * 15 = 1200 Joules.
To find the work done in moving the crate, we can use the formula:
Work = Force × Distance × cos(θ)
In this case, the force applied is 80 N, the distance moved is 15 m, and the angle between the force and the direction of motion (θ) is 0 degrees, since the force is applied horizontally.
Now, let's calculate the work:
Work = 80 N × 15 m × cos(0°)
The cosine of 0 degrees is 1, so the equation simplifies to:
Work = 80 N × 15 m × 1
Work = 1200 Nm
Since the unit for work is the Joule (J), we can convert Nm to J:
1 J = 1 Nm
Therefore, the work done in moving the crate is 1200 J.