Marching soldiers are asked to break their steps while crossing a bridge. Why?

A platoon of soldiers marches on a road in steps accoridng to the sound of a marching band The band iS stopPed and the soldiers are ordered to break the steps while crossing the bridge. Why?

Assertion: soldiers are asked to break steps while crossing the bridge. Reason: The frequency of marching may be equal to the natural frequency of bridge and may lead to resonance which can break the bridge.

STATEMENT-1 : A particle executing simple harmonic motion comes to rest at the extreme positions. STATEMENT-2 : Displacement and velocity of SHM differ in phase by (pi)/(2) rad. STATEMENT- 3 : Soldiers are asked to break steps while crossing the bridges.

A: When soldier cross a bridge, they are asked to break steps. R: If they do not break steps, then they will apply large force on bridge simutaneously.

Assertion : The soldiers marching on a suspended bridges are advised to go of steps Reason : frequency of marching step may match we the nature frequency of oscillation of bridge

Where are cross bridges present?

The cross bridges are present on the:

In the gives figure , a balanced Wheastone bridge is shown . Now it is distrubed by changing P to 15 Omega . Which of the following steps will not bring the bridge to balance again ?

Two streamlines cannot cross each other. Why?

Read the following statements regarding muscle contraction (i) One ATP utillised for making and breaking of the cross bridge. (ii) The sarcomere lies between 2 Z-lines (iii) Troponin blocks the active sites in resting stage (iv) Ca^(++) ions help in unmasking active sites on HMM Choose the correct option