CLASS 11 - MOTION IN A PLANE - ASSIGNMENT 3 - SUMS
CLASS 11 MOTION IN A PLANE ASSIGNMENT 3 SUMS 1. Two forces of 5 N and 7 N act on a particle with an angle of 60° between them. Find the resultant force. 2. Two forces whose magnitudes are in the ratio of 3:5 give a resultant of 35 N. If the angle of inclination be 60°, calculate the magnitude of each force. 3. Two equal forces have their resultant equal to either. What is the inclination between them? 4. A body is simultaneously given two velocities one 30 m/s due east and the other 40 m/s due north. Find the resultant velocity. 5. Find the unit vector parallel to the resultant of the vectors A = i + 4j - 2k and B = 3i - 5j + k. (use → for A, B and ˄ for unit vectors i, j, k). 6. Find the vector AB and its magnitude if it has initial point A(2,3,-1) and final point B(2,1,4). (use → for A, B and ˄ for unit vectors i, j, k). 7. One of the rectangular components of a velocity of 80 km/h is 40 km/h. Find the other component. 8. Fi...