E M B I B E

Alpha Question Bank for Medical: Physics>Chapter 8 - Work, Energy and Power>Exercise-1>Q 150

MEDIUM

NEET

IMPORTANT

Earn 100

A block of mass $m$ slips down an inclined plane as shown in the figure, and it presses a spring lying at the bottom. If the length of the spring $h ≫ > ℓ$ and spring constant is $K$ the compression in the spring will be

50% studentsanswered this correctly

Important Questions on Work, Energy and Power

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 8 - Work, Energy and Power>Exercise-1>Q 151

With how much velocity a block of mass

2 kg

move on a frictionless surface so as to compress a spring with force constant

2

newton/metre by

4

metres.

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 8 - Work, Energy and Power>Exercise-1>Q 152

An object is attached to a vertical spring and slowly lowered to its equilibrium position. This stretches the spring by

10 cm .

If the same object is attached to the same vertical spring, but permitted to fall instead the maximum distance upto which the spring can be stretched is:

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 8 - Work, Energy and Power>Exercise-1>Q 153

A rubber ball is dropped from a height of

5 m

on a plane. On bouncing, it rises to

1.8 m .

The ball loses its velocity on bouncing by a factor of,

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 8 - Work, Energy and Power>Exercise-1>Q 154

Two balls having mass

2 kg

and

3 kg

are approaching each other with velocities

3 m s^{- 1}

and

2 m s^{- 1}

respectively on the horizontal frictionless surface. They undergo a head-on elastic collision. Find out the maximum potential energy of deformation.

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 8 - Work, Energy and Power>Exercise-1>Q 155

If the potential energy of a spring is

V

on stretching it by

2 cm

, then its potential energy when it is stretched by

10 cm

will be

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 8 - Work, Energy and Power>Exercise-1>Q 156

A string of negligible mass going over a clamped pulley of mass $m$ supports a block of mass $M$ as shown in the figure. The force on the pulley by the clamp is given by

Question Image

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 8 - Work, Energy and Power>Exercise-2>Q 1

If a spring extends by

x

on loading, then the energy stored by the spring is (if

T

is tension in the spring and

k

is spring constant)

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 8 - Work, Energy and Power>Exercise-2>Q 2

A small block slides with velocity $0.5 \sqrt{g r}$ on the horizontal frictionless surface as shown in the Figure. The block leaves the surface at point $C$ . The angle $θ$ in the Figure is :

Question Image