Arihant Physics by D.C Pandey
A ball is dropped from the top of a building. The ball takes 0.5s to fall past the 3m height of a window some distance from the top of the building. If the speed of the ball at the top and at the bottom of the window are VT and VB respectively, then (g = 9.8m/s^)
18
Oct
A ball is dropped from the top of a building. The ball takes 0.5s to fall past the 3m height of a window some distance from the top of the building. If the speed of the ball at the top and at the bottom of the window are VT and VB respectively, then (g = [...]
A body starts from rest and is uniformly accelerated for 30 s. The distance travelled in the first 10 s is x1, next 10 s is x2 and the last 10 s is x3. Then, x1:x2:x3 is
18
Oct
A body starts from rest and is uniformly accelerated for 30 s. The distance travelled in the first 10 s is x1, next 10 s is x2 and the last 10 s is x3. Then, x1:x2:x3 is A body starts from rest and is uniformly accelerated for 30 s. The distance travelled in the first [...]
Two inclined planes `OA` and `OB` of inclinations `alpha` and `beta` equal to `30 degree` are as shown in the figure. A particle is projected at an angle of `90 degree` with plane `OA` from point `A` and it strikes the plane `OB` at point `B` normally. Then find the speed of projection `u` in m/s. (Given that `OA = OB = 20cm` and `g = 10m/s^(2)`)
18
Oct
Two inclined planes `OA` and `OB` of inclinations `alpha` and `beta` equal to `30 degree` are as shown in the figure. A particle is projected at an angle of `90 degree` with plane `OA` from point `A` and it strikes the plane `OB` at point `B` normally. Then find the speed of projection `u` in [...]
Trajectory of two particles projected from origin with speeds v1 and v2 at angles θ1 and θ2 with positive x- axis respectively are as shown in the figure. Given that (g = −10 m/s^2(jˆ)). Choose the correct option related to diagram.
18
Oct
Trajectory of two particles projected from origin with speeds v1 and v2 at angles θ1 and θ2 with positive x- axis respectively are as shown in the figure. Given that (g = −10 m/s^2(jˆ)). Choose the correct option related to diagram. 40m) ? Take g = 10 m/s^2 With what minimum speed must a particle [...]
Two particles projected vertically upward from points (0,0) and (1,0)m with uniform velocity 10 m/s and v m/s respectively, as shown in the figure. It is found that they collide after time t in space. Time t is 15(x−−√−1). Calculate x
18
Oct
Two particles projected vertically upward from points (0,0) and (1,0)m with uniform velocity 10 m/s and v m/s respectively, as shown in the figure. It is found that they collide after time t in space. Time t is 15(x−−√−1). Calculate x 0) and (1 0)m with uniform velocity 10 m/s and v m/s respectively as [...]
A large rectangular box moves vertically downward with an acceleration a. A toy gun fixed at A and aimed towards C fires a particle P.
18
Oct
A large rectangular box moves vertically downward with an acceleration a. A toy gun fixed at A and aimed towards C fires a particle P. A large rectangular box moves vertically downward with an acceleration a. A toy gun fixed at A and aimed towards C fires a particle P. October 18, 2020 Category: Arihant [...]
A particle has a velocity u towards east at t=0. Its acceleration is towards west and is constant. Let xA and xB be the magnitude of displacements in the first 10 seconds and the next 10 seconds. Then,
18
Oct
A particle has a velocity u towards east at t=0. Its acceleration is towards west and is constant. Let xA and xB be the magnitude of displacements in the first 10 seconds and the next 10 seconds. Then, A particle has a velocity u towards east at t=0. Its acceleration is towards west and is [...]
A particle is projected from a point A with velocity 2–√u an angle of 45^∘ with horizontal as shown in figure. It strikes the plane BC at right angles. The velocity of the particle at the time of collision is
18
Oct
A particle is projected from a point A with velocity 2–√u an angle of 45^∘ with horizontal as shown in figure. It strikes the plane BC at right angles. The velocity of the particle at the time of collision is A very broad elevator is going up vertically with a constant acceleration of 2m/s^2. At [...]
Tags:
A very broad elevator is going up vertically with a constant acceleration of 2m/s^2. At the instant when its velocity is 4m/s a ball is projected from the floor of the lift with a speed of 4m/s ,
relative to the floor at an elevation of 30^o. The time taken by the ball to return the floor is (g = 10m/s^2 ) ,
With what minimum speed must a particle be projected from origin so that it is able to pass through a given point (30m,40m) ? Take g = 10 m/s^2
18
Oct
With what minimum speed must a particle be projected from origin so that it is able to pass through a given point (30m,40m) ? Take g = 10 m/s^2 40m) ? Take g = 10 m/s^2 With what minimum speed must a particle be projected from origin so that it is able to pass through [...]
A projectile of mass 2kg has velocities 3 m/s and 4 m/s at two points during its flight in the uniform gravitational field of the earth. If these two velocities are perpendicular to each other, then the minimum kinetic energy of the particle during its flight is
18
Oct
A projectile of mass 2kg has velocities 3 m/s and 4 m/s at two points during its flight in the uniform gravitational field of the earth. If these two velocities are perpendicular to each other, then the minimum kinetic energy of the particle during its flight is A projectile of mass 2kg has velocities 3 [...]