1
WB JEE 2024
MCQ (Single Correct Answer)
+2
-0.5
Change Language

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

A
Two equilibrium points, one stable another unstable
B
Two equilibrium points, both stable
C
Three equilibrium points, one stable two unstable
D
Three equilibrium points, two stable one unstable
2
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

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$$^2$$)

A
0.36 J
B
0.24 J
C
0.12 J
D
0.18 J
3
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
Change Language

The kinetic energy (Ek) 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

A
5$$\widehat i$$ N
B
0 N
C
97.5$$\widehat i$$ N
D
$$-$$5$$\widehat i$$ N
4
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
Change Language
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
A
$$\sqrt {{m \over k}} v$$
B
$$\sqrt {{m \over {2k}}} v$$
C
$$\sqrt {{k \over m}} v$$
D
$$\sqrt {{k \over {2m}}} v$$
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