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A system consists of three masses `m_1, m_2 and m_3` connected by a string passing over a pulley `P`. The mass `m_1` hangs freely and `m_2 and m_3` are on a rough horizontal table (the coefficient of friction = `mu`.The pulley is frictionless and of negligible mass. The downward acceleration of mass `m_1` is (Assume, `m_1 = m_2 = m_3 =

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two masses `m_1 = 1 kg and m_2 = 2 kg` are connected by a light inextensible string and suspended by means of a weightless pulley as shown in figure.Assuming that both the masses start from rest, the distance travelled by `2 kg,` mass in `2s`

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If a box is lying in the compartment of an accelerating train and box is stationary relative to the train. What force cause the acceleration of the

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A box of mass `2 kg` is placed on the roof of a car. The box would remain stationary until the car attains a maximum acceleration. Coefficient of static friction between the box and the roof of the car is `0.2 and g = 10 ms^(-2)`. The maximum acceleration of the car, for the box to remain stationary,

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A particle of mass `2 kg` is moving on a circular path of radius `10 m` with a speed of `5 ms^(-1)` and its speed is increasing at a rate of `3 ms^(-1)`. Find the force acting on the

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Two stones of masses `m and 2 m` are whirled in horizontal circles, the heavier one in a radius `r/2` and the lighter one in a radius `r`. The tangential speed of lighter stone is `n` times that of the value of heavier stone, when they experience same centripetal forces. The value of `n`

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If a car is moving in uniform circular motion, then what should be the value of velocity of a car, so that car will not moving away from the

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A person is driving a vehicle at a uniform speed of `5 ms^(-1)` on a level curved track of radius `5 m`. The coefficient of static friction between tyres and road is 0.1. Will the person slip while taking the turn with the same speed? (Take, `g=10

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A circular racetrack of radius 300 m is banked at an angle of 15°. If the coefficient of friction between the wheels of the race car and the road is 0.2. Find optimum speed of the race car to avoid wear and tear on its tyres and maximum permissible speed to avoid slipping. (Take, `g = 9.8 ms^(-2) and tan 15° =

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A car is moving in a circular horizontal track of radius 10.0 m with a constant speed of `10.0 ms^(-1)`. A plumb bob is suspended from the roof of the car by a light rigid rod of length 10.0 m. The angle made by the rod with the track is (Take,`g = 9.8

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Inertia of an object is directly dependent on

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If impulse `I` varies with time `t` as `F(kg ms^(-1))= 20t^2 - 20t`. The change in momentum is minimum at

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The force which is dissipative in nature is

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Suppose a light-weight vehicle (say, a small car) and a heavy weight vehicle (say, a loaded truck) are parked on a horizontal road. Then, which of the following statement is correct

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Which one of the following statement is

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If no external force acts on particle, then which of the following statement is incorrect about

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Match the Column I (type of friction) with Column II (value of `mu`) and select the correct option from the codes given below. Column I Column II A. Static friction p. p is highest B. Rolling friction q. p is moderate C. Kinetic friction r. p is lowest

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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In the diagram shown in figure, match the Column I with Column II and select the correct option from the codes given below. (Take,`= 10 ms^(-2)`) Column I Column II A. Acceleration of 2 kg block p- 8 (SI unit) B. Net force on 3 kg block q- 25 (SI unit) C. Normal reaction between 2 kg and 1 kg r. 2 (SI unit)

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Assertion: Aristotle stated that an external force is required to keep a body in motion. Reason: Opposing forces are always present in the natural

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Assertion: A body is momentarily at rest but no force is acting on it at that time. Reason: When a force acts on a body, it may not have some

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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