Student Login

Home›Chapters›Work, Energy and Power PYQs›Spring & Elastic Energy›Question 9

MHT CET 2023 (10 May, Shift 2) · Spring & Elastic Energy

Spring & Elastic Energy question from MHT CET 2023 (10 May, Shift 2)

Q9MHT CET 2023 · 10 MAY · SHIFT 2Medium

Spring & Elastic Energy

A ball of mass ' $\text{m}$ ' is dropped from a height ' $\text{s}$ ' on a horizontal platform fixed at the top of a vertical spring. The platform is depressed by a distance ' $h$ '. The spring constant is ( $\text{g} =$ acceleration due to gravity)

Show answer and solution

Answer: (b)

The ball falls a total height $s + h$ ; all this PE is stored in the spring at maximum depression.
$mg(s + h) = \frac{1}{2}kh^2$
So the answer is (b) $k = \frac{2mg(s+h)}{h^2}$ .

Report a mistake

More questions on Spring & Elastic Energy

The restoring force of a spring with a block attached to the free end of the spring is…NEET 2022 (Phase 2)
As per the given figure, two blocks each of mass 250 g are connected to a spring of…JEE Main 2022 (26 Jul, Shift 1)
A block of mass ' m ' (as shown in figure) moving with kinetic energy E compresses a…JEE Main 2022 (28 Jul, Shift 1)
A 0.5 kg block moving at a speed of 12 ms ⁻¹ compresses a spring through a distance 30 cm…JEE Main 2022 (25 Jun, Shift 1)
A ball of mass 100 g is dropped from a height h = 10 cm on a platform fixed at the top of…JEE Main 2022 (24 Jun, Shift 1)
A ball of mass 4 kg, moving with a velocity of 10 ms ⁻¹, collides with a spring of length…JEE Main 2021 (18 Mar, Shift 2)
A sphere of mass 25 gram is placed on a vertical spring. It is compressed by 0.2 m using…MHT CET 2021 (21 Sep, Shift 1)
In a spring gun having spring constant 100 N/m a small ball 'B' of mass 100 g is put in…JEE Main 2021 (20 Jul, Shift 1)