× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
Home Q & A Board Science-Related Homework Help High School Level Science
New Topic  
zenmamma zenmamma
wrote...
Posts: 1
Rep: 0 0
A year ago
A construction worker uses a board and log as a lever to lift a heavy rock. If the input arm is 5 meters long and the output arm is 2 meters long, what is the mechanical advantage of the lever?

a
7
 b
0.4
 c
10
 d
2.5
Read 84 times
1 Reply

Related Topics

Replies
dt6
wrote...
#1
A year ago
The mechanical advantage of the lever can be calculated by dividing the length of the input arm by the length of the output arm.

So, mechanical advantage = input arm length/output arm length = 5/2 = 2.5

Therefore, the answer is d) 2.5.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1233 People Browsing
 124 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 33
  
 257
  
 858
Your Opinion
Previous poll results: Who's your favorite biologist?