Video Lecture
Theory For Making Notes
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Practice Questions (Basic Level)
1.
A block of mass 25 kg is raised by a 50 kg man in two different ways as shown in figure. What is the action on the floor by the man in the two cases? If the floor yields to a normal force of 700 N, which mode should the man adopt to lift the block without the floor yielding?
(a) Mode (a) Should Be Adopted
(b) Mode (b) Should Be Adopted
(c) Either Of (a) or (b) Should Be Adopted
(d) Neither (a) Nor (b) Should Be Adopted
Ans (b)
Practice Questions (JEE Main Level)
1.
The system shown in the figure is in equilibrium. Find the magnitude of tension in each string: T1, T2, T3 and T4.
(a) T1 = \frac{{100}}{{\sqrt{3}}} N: T2 = \frac{{200}}{{\sqrt{3}}}N :T3 = \frac{{200}}{{\sqrt{3}}} N : T4 = 150 N
(b) T1 = \frac{{100}}{{\sqrt{3}}} N: T2 = \frac{{200}}{{\sqrt{3}}}N :T3 = \frac{{200}}{{\sqrt{3}}} N : T4 = 200 N
(c) T1 = \frac{{100}}{{\sqrt{3}}} N: T2 = \frac{{200}}{{\sqrt{3}}}N :T3 = \frac{{200}}{{\sqrt{3}}} N : T4 = 500 N
(d) T1 = \frac{{100}}{{\sqrt{3}}} N: T2 =\frac{{200}}{{\sqrt{3}}}N :T3 = \frac{{200}}{{\sqrt{3}}} N : T4 = 250 N
Ans (b)
Practice Questions (JEE Advance Level)
1.
The system shown in the figure is in equilibrium. Find the tension in each string :T1, T2, T3, T4 and T5.
(a) T1 = T2=\frac{{200}}{{\sqrt{3}}}; T4 = T5 =200 N;T3 =\frac{{200}}{{\sqrt{8}}}
(b) T1 = T2=\frac{{200}}{{\sqrt{3}}}; T4 = T5 =200 N;T3 =\frac{{200}}{{\sqrt{5}}}
(c) T1 = T2=\frac{{200}}{{\sqrt{3}}}; T4 = T5 =200 N;T3 =\frac{{200}}{{\sqrt{3}}}
(d) T1 = T2 =\frac{{200}}{{\sqrt{3}}}; T4 = T5 =200 N;T3 =\frac{{500}}{{\sqrt{3}}}
Ans (c)