Chapter 6 – Newton’s Laws of Motion (With Friction) and Dynamics of Circular Motion
Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 6 - Newton's Laws of Motion (With Friction) and Dynamics of Circular Motion
A uniform chain is placed at rest on a rough surface of base length 1 and height h on an irregular surface as shown in figure Then the minimum coefficient of friction between the chain and the surface must be equal to
20
Oct
A uniform chain is placed at rest on a rough surface of base length 1 and height h on an irregular surface as shown in figure Then the minimum coefficient of friction between the chain and the surface must be equal to A block of mass m if coefficient of friction between the block and [...]
If the coefficient of friction between all surface figure is 0.4 then find the minimum force F to have equilibrium of the system.
20
Oct
If the coefficient of friction between all surface figure is 0.4 then find the minimum force F to have equilibrium of the system. If the coefficient of friction between all surface figure is 0.4 then find the minimum force F to have equilibrium of the system. October 20, 2020 Category: Cengage JEE Mains Physics by [...]
Block A as shown in Fig weighs `2.0 N` and block B weighs `6.0 N` The coefficient of kinetic friction between all surface is `0.25` Find the magnitude of the horizontal force necessary to drag block B to the left at constant speed if A and B are connected by a light , flexible cord passing around a fixed, frictionless pulley.
20
Oct
Block A as shown in Fig weighs `2.0 N` and block B weighs `6.0 N` The coefficient of kinetic friction between all surface is `0.25` Find the magnitude of the horizontal force necessary to drag block B to the left at constant speed if A and B are connected by a light , flexible cord [...]
For the situation shown in Fig the block is stationary w.r.t. inclined fixed in an elevator the elevator is having an acceleration of 5–√a0 whose components are shown in the figure the surface is rough and coefficient of static friction between the inclined and block is μ Determine the magnitude of force exerted by inclined on the block (Takea0=g/2 and θ=37∘,μs=0.2)
20
Oct
For the situation shown in Fig the block is stationary w.r.t. inclined fixed in an elevator the elevator is having an acceleration of 5–√a0 whose components are shown in the figure the surface is rough and coefficient of static friction between the inclined and block is μ Determine the magnitude of force exerted by inclined [...]
A block of mass `4 kg` is pressed against the wall by a force of `80N` as shown in figure Determine the value of the friction force and block’s acceleration (Take u(s) = 0.2 ,u(s) = 0.15)`
20
Oct
A block of mass `4 kg` is pressed against the wall by a force of `80N` as shown in figure Determine the value of the friction force and block’s acceleration (Take u(s) = 0.2 ,u(s) = 0.15)` A block of mass `4 kg` is pressed against the wall by a force of `80N` as shown [...]
A house is built on the top of a hill with 45^∘ slope. Due to the sliding of material and sand top from top to the bottom of till, the slip angle has been reduced if the coefficient of static friction between sand particles is 0.75 what is the final angle attained by hill ? (tan^−1 0.75=37^∘)
20
Oct
A house is built on the top of a hill with 45^∘ slope. Due to the sliding of material and sand top from top to the bottom of till, the slip angle has been reduced if the coefficient of static friction between sand particles is 0.75 what is the final angle attained by hill ? [...]
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Chapter 6 - Newton's Laws of Motion (With Friction) and Dynamics of Circular Motion
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A house is built on the top of a hill with 45^∘ slope. Due to the sliding of material and sand top from top to the bottom of till ,
the slip angle has been reduced if the coefficient of static friction between sand particles is 0.75 what is the final angle attained by hill ? (tan^−1 0.75=37^∘) ,
A coin is placed at the edge of a horizontal disc rotating about a vertical axis through its axis through speed 2rads^−1. The radius of the disc is 50 cm. Find the minimum coefficient of friction between disc and coin so that the coin does not slip (g = 10ms^−2 ).
20
Oct
A coin is placed at the edge of a horizontal disc rotating about a vertical axis through its axis through speed 2rads^−1. The radius of the disc is 50 cm. Find the minimum coefficient of friction between disc and coin so that the coin does not slip (g = 10ms^−2 ). A block of mass [...]
A circular table of radius 0.5 m has a smooth diametrical groove. A ball of mass 90 g is placed inside the groove along with a spring of spring constant 10^2 Ncm^−1. One end of the spring is tied to the edge of the table and the other end to the ball. The ball is at a distance of 0.1 m from the center when the table is at rest. On rotating the table with a constant angular frequency of 10^2 rads^−1, the ball moves away from the center by a distance nearly equal to
20
Oct
A circular table of radius 0.5 m has a smooth diametrical groove. A ball of mass 90 g is placed inside the groove along with a spring of spring constant 10^2 Ncm^−1. One end of the spring is tied to the edge of the table and the other end to the ball. The ball is [...]
A circular road of radius 1000 m has banking angle 45^∘. The maximum safe speed of a car having mass 2000 kg will be , if the coefficient of friction between tyre and road is 0.5
20
Oct
A circular road of radius 1000 m has banking angle 45^∘. The maximum safe speed of a car having mass 2000 kg will be , if the coefficient of friction between tyre and road is 0.5 A circular road of radius 1000 m has banking angle 45^∘. The maximum safe speed of a car having [...]
A vehicle is moving with a velocity v on a curved road of width b and radius of curvature R. For counteracting the centrifugal force on the vehicle, the difference in elevation required in between the outer and inner edge of the rod is
20
Oct
A vehicle is moving with a velocity v on a curved road of width b and radius of curvature R. For counteracting the centrifugal force on the vehicle, the difference in elevation required in between the outer and inner edge of the rod is A vehicle is moving with a velocity v on a curved [...]