A block of mass 5.0 kg is suspended from the end of a vertical spring which is stretched by 10 cm under the load of the block. The block is given a sharp impulse from below so that it acquires an upward speed of 2.0 m/s. How high will it rise? Take g = 10 m/s 2 .

Question

Philoid · Accepted Answer

Let the height to which the block will rise be h.

Mass of the block, m = 5 kg

Upward speed of the block, v = 2 m/s

The potential energy of the spring gets converted into kinetic energy of the block

⇒ mgh = 1/2 mv2

⇒

⇒ h = 0.2 m

∴ The block will rise up to 0.2 m or 20cm

A block of mass 5.0 kg is suspended from the end of a vertical spring which is stretched by 10 cm under the load of the block. The block is given a sharp impulse from below so that it acquires an upward speed of 2.0 m/s. How high will it rise? Take g = 10 m/s2.

A block of mass 5.0 kg is suspended from the end of a vertical spring which is stretched by 10 cm under the load of the block. The block is given a sharp impulse from below so that it acquires an upward speed of 2.0 m/s. How high will it rise? Take g = 10 m/s².