Forces And Equilibrium Question Preview (ID: 60615)


Hooke's Law/Frictional Force. TEACHERS: click here for quick copy question ID numbers.

A spring with a spring constant of 68 newtons per meter hangs from a ceiling. When a 12N downward force is applied to the free end of the spring, the spring stretches a total distance of..
a) 0.18 m
b) 5.7m
c) 0.59 m
d) 820 m

A 3.00 newton force causes a spring to stretch 60.0 centimeters. Calculate the spring constant
a) 3 N/m
b) 5 N/m
c) 2 N/m
d) 10 N/m

A .2 kg block is slid across a horizontal table with a velocity of 4m/s. What is the weight of the block?
a) 2.12 N
b) 9.8 N
c) 1.96 N
d) 0 N

A student is in an elevator traveling from the first to tenth floor. When does the student exert the greatest force on the floor?
a) Slowing down approaching the 10th floor
b) moving up at a constant speed
c) at rest on the first floor
d) accelerating upward as it leaves the first floor

A 10 kg box is sliding across a level floor. The box is acted upon by a force of 35 N east and a frictional force 15 N west. What is the magnitude of the acceleration of the box?
a) 0.50 m/s2
b) 8.8 m/s2
c) 2.0 m/s2
d) 10 m/s2

What does the k stand for in the Hooke's Law equation?
a) spring constant
b) deformation of the spring
c) net force
d) coefficient of friction

Hooke's Law states the amount a spring stretches is _____ proportional to the amount of force applied to it.
a) inversely
b) not
c) always
d) directly

A 65 kg astronaut weighs 638 newtons at the surface of Earth. What is the mass of the astronaut at the surface of the Moon, where the acceleration due to gravity is 1.62m/s2?
a) 1.1 N
b) 50 N
c) 15 N
d) 65 N

Which of the following would be a way to use friction?
a) Oil on ball bearings
b) wheels
c) cleats on cross country shoes
d) blades on ice skates

A 980 N sign is hanging from two chains. What is the tension force for each chain?
a) 980 N
b) 9.8 N
c) 2 N
d) 490 N

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