303 - Mechanics part 1 Questions Answers

Use formula F(min)/mg = mg/F(max)
Now solve. Watch this video


Sir pls solve

Impulse is →Ft and Power = W/t→F=m→g and W = mghNow calculate the time of motion and get the answer

No horizontal force.
Draw a perpendicular from centre to horizontal plane. Then calculate horizontal distance.
Now solve.
If any problem, then inform

According to given conditiondθdt=vsin60a-(v+vcos60)tNow solve it for tthen distance = vtsolve
inform for any difficulty

A long smooth cylindrical pipe of radius r is tilted at an angle alpha to the horizontal. A small body at point A is pushed upwards along the inner surface of the pipe so that the direction of its initial velocity forms an angle phi with generatrix AB. Determine the minimum initial velocity V at which the body starts moving upwards without being separated from the surface of the pipe
At the front of the cylinder, see a tilted circle Now compare this problem with vertical circular motion.A is the top point of that path. We know that the minimum velocity at top point tangential to path of vertical circle should be √gr.Here due to tilt of this circle effective gravity = gcosαso vsinφ =√gcosαrnow solveinform for any issuewait for video

According to first given condition velocity component of rain = u
let vertical component of rain = v
According to second condition
velocity of rain relative to man
=(nu-u)(-ˆi)+v(-ˆj)here direction of motion of man is ˆi and vertically upward direction is considered as ˆjNow draw triangle for this vector and get cotθsolve itinform for any issue