WB JEE 2024 | Work Power & Energy Question 2 | Physics

WB JEE 2024

MCQ (Single Correct Answer)

-0.5

The following figure shows the variation of potential energy $$V(x)$$ of a particle with distance $$x$$. The particle has

WB JEE 2024 Physics - Work Power & Energy Question 1 English

Two equilibrium points, one stable another unstable

Two equilibrium points, both stable

Three equilibrium points, one stable two unstable

Three equilibrium points, two stable one unstable

WB JEE 2023

MCQ (Single Correct Answer)

-0.25

A uniform rope of length 4 m and mass 0.4 kg is held on a frictionless table in such a way that 0.6 m of the rope is hanging over the edge. The work done to pull the hanging part of the rope on to the table is, (Assume g = 10 m/s$$^2$$)

0.36 J

0.24 J

0.12 J

0.18 J

WB JEE 2022

MCQ (Single Correct Answer)

-0.25

The kinetic energy (E_k) of a particle moving along X-axis varies with its position (X) as shown in the figure. The force acting on the particle at X = 10 m is

WB JEE 2022 Physics - Work Power & Energy Question 5 English

5$$\widehat i$$ N

0 N

97.5$$\widehat i$$ N

$$-$$5$$\widehat i$$ N

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

WB JEE 2021 Physics - Work Power & Energy Question 7 English

A block of mass m slides with speed v on a frictionless table towards another stationary block of mass m. A massless spring with spring constant k is attached to the second block as shown in figure. The maximum distance, the spring gets compressed through is

$$\sqrt {{m \over k}} v$$

$$\sqrt {{m \over {2k}}} v$$

$$\sqrt {{k \over m}} v$$

$$\sqrt {{k \over {2m}}} v$$

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