/
/
Infinite springs with force constant k, 2k, 4k and 8k.... respectively are connected in series. The effective force constant of the spring is ____.
2 K
K
2048
To make the frequency double of a spring oscillator, we have to ____.
reduce the mass to one fourth
quadruple the mass
double of mass
half of the mass
/
4 cm
3 cm
2 cm
1 cm
When a body of mass 1.0 kg is suspended from a certain light spring hanging vertically, its length increases by 5 cm. By suspending 2.0 kg block to the spring and if the block is pulled through 10 cm and released the maximum velocity in it in m/s is: (Acceleration due to gravity=10m/s2) ____.
0.5
1
2
4
/
2 : 1
1 : 2
4 : 1
1 : 4
If a spring extends by x on loading, then energy stored by the spring is (if T is the tension in the spring and K is the spring constant) ____.
A weightless spring of length 60 cm and force constant 200 N/m is kept straight and unscratched on a smooth horizontal table and its ends are rigidly fixed. A mass of 0.25 kg is attached at the middle of the spring and is slightly displaced along the length. The time period of the oscillation of the mass is ____.
The time period of a mass suspended from a spring is T. If the spring is cut into four equal parts and the same mass is suspended from one of the parts, then the new time period is ____.
T
2 T