Étiquette : GRADE 11 PHYSICS
-
Building Height Calculation Using Motion Equations
Question: A particle is projected up with an initial speed of u=10 ms-1 from the top of a building at time t=0.At time t=5 sec, the particle strikes the ground.Find the height of the building. Solution:Building height calculation Solution: Net displacement of the particle is the difference of final position(C) and the initial position(A). Applying…
-
Vertical Projectile Motion: Height and Time Calculations
Question: A ball is thrown vertically upwards with a velocity of 20 ms-1 from the top of a multistorey building . The height of the point from where the ball is thrown is 25.0 m from the ground.(a) How high will the ball rise? and (b) How long will it be before the ball hits…
-
A ball is thrown upwards from the ground with an initial velocity ‘u’.The ball is at a height of 60 m at two times,the interval being 6 s.Find the initial velocity ‘u’
Solution: First Method: The ball reaches the given height of 60 m at a time t 1 seconds ( rising up).For the second time it reaches the 60 m height at a time t 2 seconds. (comes down) Applying the equation of motion with the sign convention. Initial velocity (u) = +u Acceleration due to…
-
Vector Addition: 60 N and 80 N Forces at 60° Angle
Question: Two forces of 60 N and 80 N acting at an angle of 60 degree with each other pull an object.What single pull would replace the given forces? Solution: Vector addition Let the two forces be represented as A and B which are inclined at an angle of 60 degree.The resultant of these two…
-
Calculation of Resultant Force Angle | 120° Solution
Question: Two equal forces have their resultant equal to either.At what angle they are inclined? Solution: Resultant force Angle $$R=\sqrt{A^2+B^2+2AB Cos\theta}$$ Let the two forces be represented by A and B and their resultant is R. Here A=F, B=F and R=F; Reason: the given two forces are equal and their resultant is equal to either.…
Chat With Us
Vous devez être connecté pour poster un commentaire.