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Physics 9 Chapter 3 - Dynamics - 19
1.
What is the maximum value of friction called?
a) Force of minimum friction
b) Force of maximum friction
c) Coefficient of friction
d) Force of limiting friction
2.
On which of the following force of limiting friction depends?
a) Coefficient of friction
b) Constant reaction
c) Cold welds
d) Normal reaction
3.
On which of the following Fs depends?
a) Cold welds
b) Coefficient of friction
c) Normal reaction
d) Constant reaction
4.
On which of the following force of limiting friction depends?
a) Constant reaction
b) Coefficient of friction
c) Pressing force
d) Cold welds
5.
On which of the following Fs depends?
a) Constant reaction
b) Pressing force
c) Coefficient of friction
d) Cold welds
6.
What is the ratio between the force of limiting friction Fs and the normal reaction R called?
a) Coefficient of friction
b) Constant reaction
c) Cold welds
d) Pressing force
7.
How is Coefficient of friction represented?
a) Coefficient of friction = Fs / R
b) Coefficient of friction = Fs x R
c) Coefficient of friction = Fs + R
d) Coefficient of friction = Fs - R
8.
If m be the mass of the block, then for horizontal surface what will be the normal reaction R?
a) R = m x g
b) R = m / g
c) R = m + g
d) R = m - g
9.
What is needed to walk on the ground?
a) Gravity force
b) Friction force
c) Restoring force
d) Pressing force
10.
How is force of limiting friction denoted?
a) Fm
b) Fli
c) Fs
d) Ff
e) Fl
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