Cengage JEE Mains Physics by B.M Sharma
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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Cengage JEE Mains Physics by B.M Sharma
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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 [...]
A block of mass m is lying on a wedge having inclination angle α=tan^−1(1/5) wedge is moving with a constant acceleration a=2ms^−2 The minimum value of coefficient of friction μ so that m remain stationary w.r.t. wedge is
20
Oct
A block of mass m is lying on a wedge having inclination angle α=tan^−1(1/5) wedge is moving with a constant acceleration a=2ms^−2 The minimum value of coefficient of friction μ so that m remain stationary w.r.t. wedge is A block of mass m if coefficient of friction between the block and the surface is inclined [...]
A solid block of mass 2kg is resting inside a cube shown in figure The cube is moving with a velocity vˆ=5iˆ+2jˆms^−1 If the coefficient of friction between the surface of cube and block is 0.2 then the force of friction between the block and cube is
20
Oct
A solid block of mass 2kg is resting inside a cube shown in figure The cube is moving with a velocity vˆ=5iˆ+2jˆms^−1 If the coefficient of friction between the surface of cube and block is 0.2 then the force of friction between the block and cube is A block of mass m if coefficient of [...]
A horizontal force of 25N is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is 0.4. The weight of the block is:
20
Oct
A horizontal force of 25N is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is 0.4. The weight of the block is: A horizontal force of 25N is necessary to just hold a block stationary against a wall. The coefficient of friction between [...]
A block of mass m, lying on a rough horizontal plane is acted upon by a horizontal force P and another force Q, inclined at an angle θ to the vertical. The block will remain in equilibrium, if coefficient of friction between the block and the surface is
20
Oct
A block of mass m, lying on a rough horizontal plane is acted upon by a horizontal force P and another force Q, inclined at an angle θ to the vertical. The block will remain in equilibrium, if coefficient of friction between the block and the surface is A block of mass m if coefficient [...]