The motion of a body is simple harmonic if the?
acceleration is always directed towards a fixed point
path of motion is a straight line
acceleration is proportional to the square of the distance from a fixed point
acceleration is constant and directed towards a fixed point
Correct answer is A
In simple harmonic motion, the acceleration of the particle is directed towards its mean position and directly proportional to its displacement
0.2ms\(^{-1}\)
0.5ms\(^{-1}\)
5.0ms\(^{-1}\)
5.5ms\(^{-1}\)
Correct answer is C
Using; m\(_{1}\) u\(_{1}\) + m\(_{2}\) u\(_{2}\) = (m\(_{1}\) + m\(_{2}\))v
m\(_{1}\) = 0.5kg, u\(_{1}\) = 10ms\(^{1}\), m\(_{2}\) = 0.5kg, u\(_{1}\) = 0
\(\therefore\) (0.5kg x 10) + (0.5 x 0) = (0.5 + 0.5)v
v = 5ms\(^{1}\)
I, II, III and IV
I, II, and III only
I, II, and IV only
I and IV only
Correct answer is B
Only 'mass' is a fundamental quantity
A man will exert the greatest pressure when he?
lies flat on his back
lies on his belly
stands on both feet
stands on the toes of one foot
Correct answer is D
Pressure varies inversely as A
i.e P \(\propto\) \(\frac{1}{A}\)
The slope of the straight line displacement-time graph indicates?
distance traveled
uniform velocity
uniform acceleration
uniform speed
Correct answer is B
\(\frac{\bigtriangleup s}{\bigtriangleup t}\) = uniform velocity