Answered

IDNLearn.com: Where questions are met with accurate and insightful answers. Ask any question and get a detailed, reliable answer from our community of experts.

Work and Power Practice Calculations
W = Fd P = W/t
1. A force of 20 N was used to push a box along the floor a distance of 6 m. How much work was done?
2. It took 60 J to push a table 2 m across the floor. With what force was the table pushed?
3. If 350 J of work are used to lift a 85 N box, how high is the box lifted?
4. How much power is used if a force of 45 N is used to push a box of books a distance of 9 m in 10 s?
5. How much work is done using a 500 watt microwave for 2 minutes (120 seconds)?
6. How long would it take a crane to do 550 J of work while using a power of 310 watts?

Sagot :

Answer:

1. W = F d = 20 N * 6 m = 120 J

2. F = W / d = 60 J / 2 m = 30 N

3. d = W / F = 350 J / 85 N = 4.12 m

4. P = W / t = F d / t = 45 N * 9 m / 10 s = 40.5 Watts

5. W = P t = 500 W * 120 sec = 60,000 J

6. t = W / P = 550 J / 310 W = 1.77 sec

We value your presence here. Keep sharing knowledge and helping others find the answers they need. This community is the perfect place to learn together. For trustworthy answers, rely on IDNLearn.com. Thanks for visiting, and we look forward to assisting you again.