THINK! You don't use "W= mg" because you are not given m, the mass. You are given the weight, w, of 1500 Newtons, of each block and is to be lifted 8 m. What is the work done to lift one block? He lifts 2 blocks every minute so how many does he lift in 10 minutes? How many in 60 minutes?fixedglare said:
You state, above, that W= fd. That is, if you apply a force f over a distance d you do work w. Here the weight (not mass) is w and you must apply the force, wg, a vertical distance h. Here the weight of each block 1500 Newtons and the height is 8 m. So what work is required to lift one 1500 N block a distance 8 meters? (Be carful of the units.)
chestermiller said:
HallsofIvy said:
HallsofIvy said:
fixedglare said:
Chestermiller said:
The units for time, distance, and weight will depend on the specific situation and what is being measured. Time is typically measured in seconds, distance in meters, and weight in kilograms. However, other units such as hours, feet, and pounds may also be used.
The formula for calculating work is work = force x distance, or W = F * d. This means that work is equal to the amount of force applied multiplied by the distance over which the force is applied.
Yes, force can be measured in various units such as newtons, pounds, or dynes. It is important to ensure that the units for force match the units for distance and weight in order to get an accurate result.
To convert between units, use conversion factors. For example, to convert from pounds to newtons, use the conversion factor 1 lb = 4.448 N. Multiply the given force in pounds by this conversion factor to get the equivalent force in newtons.
No, work can be either positive or negative depending on the direction of the force and the direction of the movement. If the force and movement are in the same direction, work will be positive. If they are in opposite directions, work will be negative.