Work Done by a Force

The video tutorial explains how to calculate the work done when a force of 10 Newton displaces a body by 2 meters at an angle of 60 degrees to the direction of the force. It introduces the problem, sets up the given quantities, and demonstrates the calculation using the formula for work done, which involves the cosine of the angle between force and displacement. The final result is a work done of 10 Joules.

What is the force applied to the body in the problem?

• 15 Newton

• 20 Newton

• 5 Newton

• 10 Newton

What is the displacement of the body in the given problem?

• 3 meters

• 4 meters

• 2 meters

• 1 meter

What is the angle between the force and the displacement?

• 45 degrees

• 30 degrees

• 60 degrees

• 90 degrees

Which formula is used to calculate the work done when there is an angle between force and displacement?

• W = F + S

• W = F - S

• W = F * S

• W = F * S * cos(θ)

What is the value of cos(60 degrees) used in the calculation?

• 0.25

• 0

• 0.5

• 1

What is the calculated work done in the problem?

• 20 Joules

• 15 Joules

• 10 Joules

• 5 Joules

In the context of this problem, why is the cosine function used?

• To calculate the force

• To find the displacement

• To account for the angle between force and displacement

• To determine the mass of the body