Work Formula:
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Definition: This formula calculates the work done when a force moves an object over a distance at an angle.
Purpose: It helps in physics and engineering to determine the energy transferred by a force acting on an object.
The formula is:
Where:
Explanation: Only the component of force in the direction of displacement does work. The cosine term accounts for the angle between them.
Details: Understanding work is fundamental in physics for analyzing energy transfer in mechanical systems.
Tips: Enter the force in Newtons, distance in meters, and angle in degrees (0° means force and displacement are parallel).
Q1: What happens when θ = 90°?
A: When force is perpendicular to displacement (θ=90°), cos(90°)=0, so no work is done.
Q2: What are typical units for each variable?
A: Force in Newtons (N), distance in meters (m), angle in degrees (°), and work in Joules (J).
Q3: Can work be negative?
A: Yes, when 90° < θ ≤ 180°, cos(θ) is negative, indicating force opposes the motion.
Q4: What's the difference between work and power?
A: Work is energy transfer, while power is the rate of work done (work/time).
Q5: How does this relate to kinetic energy?
A: The work-energy theorem states that net work equals change in kinetic energy.