3m এবং 2m ভরের দুটি ছোট বল এবং প্রতিটিতে চার্জ রয়েছে Q একটি স্ট্রিং পাসিং দ্বারা সংযুক্ত ...

Find the acceleration of the body if a force F = 8 N pulls the string at P that passes over the body and it is connected by another string to a rigid support at Q . (Take radius of gyration k = (2)/(sqrt(3)) m, R = 2 m, r = 1 m , and mass of the body m = 3 kg ). .

Which of the following pairs of triangles are congruent? If they are congruent, write out the pairs of equal angles. A B C : A B=3c m , B C=4c m , C A=2 c m D E F : D E=2 c m , E F=3 c m a n d F D=4 c m P Q R : P Q=17 c m , Q R=15 c m , P R=18 c m D E F : D E=18 c m , E F=17 c m , D F=15 c m .

Two small balls of masses 3m and 2m and each having charges Q are connected by a string passing over a fixed pulley. Calculate the acceleration of the balls (in m//sec^(2) ) if the whole assembly is located in a uniform electric field E=(mg)/(2Q) acting vertically downwards. Neglect any interaction between the balls. Take g= 10 m//s^(2)

In a A B C , P and Q are point on the sides A B and A C respectively, such that P Q B C . If A P=2. 4 c m , A Q=2c m , Q C=3c m and B C=6c m , find A B and P Q .

(a) A point charge Q = 100 mu C is placed at origin. Find electric field vector at point ( 6 m , 8 m) . (b) A point charge Q = 169 mu C is placed at (1 m , 2m , 3m) . Find the electric field vector at the point (4m , 6m , 15m) .

A force vecF = (hati+hatj-hatk)N acts at a point P(3 m, 6 m, 9 m). The torque exerted by this force about a point Q(2 m, 7 m, 8 m) is

A non viscous liquid of constant density 10^(3) kg//m^(3) flows in stream line motion along a vertical tube PQ of variable cross-section. Height of P and Q are 2m and 2.5m respectively. Area of tube at Q is equal to 3 times the area of tube at 'P'. Then work done per unit volume by pressure as liquid flows from P and Q. Speed of liquid at 'P' is 3 m//s .

Two point charges q_1=q_2=2muC are fixed at x_1=+3 m and x_2=-3m as shown in figure. A third particle of mass 1 g and charge q_3=-4muC are released from rest at y=4.0m .Find the speed of the particle as it reaches the origin.