In using a long steel rod as a lever to move a large rock, where should the fulcrum be placed for a person to use the least amount of force to move the rock?
A. Anywhere in between; it makes no difference
B. Close to the rock
C. Close to the person
D. Exactly halfway between the person and the rock
Answer: B
You might also like to view...
The lower limit for a main sequence star is _______________ solar masses
Fill in the blank(s) with correct word
The acceleration of a ball as it rolls down a ramp is 4 m/s2 . The ball is referred to 2 s after it starts to roll. The distance from the starting point is 16 m
a. True b. False Indicate whether the statement is true or false
An archer pulls her bow string back 0.40 m by exerting a force that increases uniformly from zero to 240 N. What is the equivalent spring constant of the bow, and how much work is done in pulling the bow?
The magnetic field inside a solenoid having 100 turns per cm at a current of 5.0 A is
a.
b.
c.
d.
e.