Frequently Asked Questions
Maximum value of static friction is called
A: Limiting friction
B: Rolling friction
C: Normal reaction
D: Coefficient of friction
Limiting friction is the maximum value of the static friction. When a body overcomes the limiting friction, the body starts moving.
Hence, option A is correct.
Two particles are projected simultaneously in the same
vertical plane, from the same point, both with different speeds and at different angles horizontally. The path followed by one, as seen by the other, is
A: a vertical line
B: a parabola
C: a hyperbola
D: a straight line making a constant angle ( ≠ 90 ^∘ ) with horizontal
which is a constant. So the path followed by one, as seen by the other, is a straight line, making a constant angle with the horizontal.
Hence, the correct option is (D).
Give two examples of the following Random motion
If an object in motion has no particular direction and its motion shifts unexpectedly, then it is said to have random motion.
The two examples of random motion are:
Motion of a football player.
Movement of a mosquito.