Worksheets8Class Friction Test 1
Total questions: 15
Worksheet time: 11mins
Name
Class
Date
1.
The frictional force exerted by fluid is called.
a)
Rollin friction
b)
slinding friction
c)
drag
d)
normal force
2.
A man standing on the level floor. What forces acting on him?
a)
normal force
b)
gravitational force
c)
normal force and gravitational force
d)
Friction force
3.
The unit of force is
a)
metre
b)
km
c)
Newton
d)
joule
4.
Friction is propartional to.
a)
normal force
b)
force
c)
mass
d)
none of these
5.
__________ Reduces the friction.
a)
Lubricant
b)
drag
c)
mass
d)
none of these
6.
The chage in the length of a spring……………..to the applied force
a)
is indirect proportional
b)
is equal
c)
is direct proportional
d)
does not depend
7.
When the speed of the body moving in a straight line changes continuously then the body acquires?
a)
acceleration
b)
speed
c)
velocity
d)
displacement
8.
The body of birds and fish must have evolved to shapes in over coming……………
a)
rolling frictin
b)
static friction
c)
sliding friction
d)
fluid friction
9.
This friction self adjusting force?(Sliding friction, static friction, rolling friction, fluid friction)
a)
Sliding friction
b)
static friction
c)
rolling friction
d)
fluid friction
10.
Friction is indipendent of
a)
Nature of surface
b)
Normal force
c)
irregularities in surface
d)
Area of contact
11.
To overcome friction ____________ used in machinery
a)
dynamo
b)
motor
c)
wires
d)
ball bearngs
12.
Friction produces
a)
light
b)
sound
c)
heat
d)
none of these
13.
The friction exerted by moving body is called
a)
Static friction
b)
sliding friction
c)
rolling friction
d)
drag
14.
The friction acting on the body which is at rest is
a)
sliding friction
b)
static friction
c)
rolling friction
d)
drag
15.
The friction which is least among all the frictions is
a)
Static friction
b)
sliding friction
c)
rolling friction
d)
drag
100 %
