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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

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

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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

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

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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

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

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The force which is dissipative in nature is

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

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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

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

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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

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

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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)

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

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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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Assertion: At the microscopic level, all bodies are made up of charged constituents (like nuclei and electrons) and various contact forces exist between them. Reason: These forces are due to elasticity of bodies, molecular collisions and impacts,

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

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Assertion: If force is not parallel to the velocity of the body, but makes some angle with it, it changes the component of velocity along the direction of force. Reason: The component of velocity parallel to the force remains

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

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Assertion If we consider system of two bodies `A and B` as a whole, `F_(AB) and F_(BA)` are internal forces of the system `(A + B)`. They add to give a null force. Reason: Internal forces in a body or a system of particles cancel away in

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

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Assertion: It is not always necessary that external agency of force is in contact with the object while applying force on object. Reason: A stone released from top of a building accelerates downward due to gravitational pull of the

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Assertion: A seasoned cricketer allows a longer time for his hands to stop the ball, while catching the ball. His hand is not hurt. Reason: The novice (new player) keeps his hand fixed and tries to catch the ball almost instantly. He needs to provide a much greater force to stop the ball instantly and this

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

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Assertion: Product of distance and velocity (i.e. momentum) is basic to the effect of force on motion. Reason: Same force for same time causes the same change in momentum for different

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

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