A Lamp of Mass M Hangs from a Spring Scale

question 74

Multiple Choice

A lamp of mass m hangs from a spring scale which is attached to the ceiling of an elevator.When the elevator is stopped at the fortieth floor,the scale reads mg.What does it read as the elevator slows down to stop at the ground floor?

• A)more than mg
• B)less than mg
• C)mg
• D)zero
• E)One cannot tell without knowing how fast the elevator is stopping.

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Definitions:

Area Multiplied

The process of calculating the extended surface or space by multiplying dimensions, typically used in geometric calculations.

Work

When effort or force produces an observable result (movement), work results. In a hydraulic circuit, this means moving a load. To produce work in a hydraulic circuit, there must be flow. Work is measured in units of force multiplied by distance, for example, pound-feet.

Confined Hydraulic Circuit

A closed hydraulic system where the fluid is contained within specific boundaries, often used for precise control in machinery.

Fluid Leakage

The escape of liquids such as oil, coolant, or hydraulic fluid from their contained systems, indicating potential malfunction or wear.