1
JEE Main 2023 (Online) 25th January Morning Shift
+4
-1

An object of mass 8 kg is hanging from one end of a uniform rod CD of mass 2 kg and length 1 m pivoted at its end C on a vertical wall as shown in figure. It is supported by a cable AB such that the system is in equilibrium. The tension in the cable is (Take g = 10 m/s$$^2$$)

A
90 N
B
240 N
C
30 N
D
300 N
2
JEE Main 2023 (Online) 24th January Morning Shift
+4
-1

As per given figure, a weightless pulley P is attached on a double inclined frictionless surfaces. The tension in the string (massless) will be (if g = 10 m/s$$^2$$)

A
$$\left( {4\sqrt 3 - 1} \right)N$$
B
$$\left( {4\sqrt 3 + 1} \right)N$$
C
$$4\left( {\sqrt 3 - 1} \right)N$$
D
$$4\left( {\sqrt 3 + 1} \right)N$$
3
JEE Main 2023 (Online) 24th January Morning Shift
+4
-1

Given below are two statements :

Statement I : An elevator can go up or down with uniform speed when its weight is balanced with the tension of its cable.

Statement II : Force exerted by the floor of an elevator on the foot of a person standing on it is more than his/her weight when the elevator goes down with increasing speed.

In the light of the above statements, choose the correct answer from the options given below :

A
Both Statement I and Statement II are false
B
Both Statement I and Statement II are true
C
Statement I is false but Statement II is true
D
Statement I is true but Statement II is false
4
JEE Main 2022 (Online) 29th July Evening Shift
+4
-1

Two bodies of masses $$m_{1}=5 \mathrm{~kg}$$ and $$m_{2}=3 \mathrm{~kg}$$ are connected by a light string going over a smooth light pulley on a smooth inclined plane as shown in the figure. The system is at rest. The force exerted by the inclined plane on the body of mass $$\mathrm{m}_{1}$$ will be : [Take $$\left.\mathrm{g}=10 \mathrm{~ms}^{-2}\right]$$

A
30 N
B
40 N
C
50 N
D
60 N
EXAM MAP
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