High School

You place a book of mass 5.00 kg against a vertical wall. You apply a constant force to the book, where the force is at an angle above the horizontal.

What is the vertical component of the force?

A. 5.00 sin(θ) N
B. 5.00 cos(θ) N
C. 5.00 tan(θ) N
D. 5.00 N

(Note: Please show work on a paper describing each step!)

Answer :

Final answer:

Explanation on calculating work done on a cart at an angle above the horizontal and comparing it to work done horizontally . is 5 . The correct option is D .

Explanation:

Work Done on a Cart:

To calculate the work done on the cart by the boy when pulling at an angle of 30° above the horizontal:

  1. Calculate the component of the force parallel to the direction of motion.
  2. Find the work done using the formula: Work = Force × Distance.

Comparing Different Scenarios:

If the boy pulled horizontally instead of at an angle, the work done can be calculated similarly with the force being fully parallel to the motion direction. Explanation on calculating work done on a cart at an angle above the horizontal and comparing it to work done horizontally . is 5 . The correct option is D .