What provides the restoring force in the following cases ?
$(1)$ Compressed spring becomes force for oscillation.
$(2)$ Displacement of water in $U\,-$ tube,
$(3)$ Displacement of pendulum bob from mean position.
What provides the restoring force in the following cases ?
$(1)$ Compressed spring becomes force for oscillation.
$(2)$ Displacement of water in $U\,-$ tube,
$(3)$ Displacement of pendulum bob from mean position.
$(1)$ Elasticity of material of spring
$(2)$ Weight of water
$(3)$ Weight of bob
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