ET unit 7 -- intro to work

Front

What is the formula for calculating work?

Back

Work = Force x Distance

Front

What is the unit of work in the International System of Units (SI)?

Back

Joule (J)

Front

How much work is done when a force is applied but there is no movement?

Back

Zero work is done.

Front

If a force of 50 N is applied over a distance of 100 m, how much work is done?

Back

5000 J

Front

What is the relationship between joules, newtons, and meters?

Back

1 joule = 1 newton x 1 meter

Front

In the context of work, what does it mean for a force to be constant?

Back

A constant force means the force applied does not change in magnitude or direction during the movement.

Front

What is the work done by the normal force when an object moves horizontally?

Back

The work done by the normal force is zero.

Front

In which scenario is work being done on an object?

Back

Work is done when a force causes an object to move in the direction of the force.

Front

What is the significance of the angle between force and displacement in calculating work?

Back

Work is maximized when the force is applied in the same direction as the displacement.

Front

What is the formula for calculating the work done when the force is applied at an angle?

Back

Work = Force x Distance x cos(θ) where θ is the angle between the force and the direction of motion.