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 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 [...]
A block of mass m is rest with respect to a rough incline kept in elevator moving up with acceleration: Which of following statements is correct ?
20
Oct
A block of mass m is rest with respect to a rough incline kept in elevator moving up with acceleration: Which of following statements is correct ? A block of mass m is rest with respect to a rough incline kept in elevator moving up with acceleration: Which of following statements is correct ? October [...]
A passenger is traveling a train moving at 40ms^−1 Hit suitcase is kept on the berth ,The drive of train applies breaks such that the speed of the train decreases at a constant rate to 20ms^−1 in 5s What should be the minimum coefficient of friction between the suitcase and the berth if the suitcase is not to slide during and retardation of the train ?
20
Oct
A passenger is traveling a train moving at 40ms^−1 Hit suitcase is kept on the berth ,The drive of train applies breaks such that the speed of the train decreases at a constant rate to 20ms^−1 in 5s What should be the minimum coefficient of friction between the suitcase and the berth if the suitcase [...]
A body of mass M is resting on a rough horizontal plane surface the coefficient of friction being equal to μ At t=0 a horizontal force F=F0t starts acting on it , where F0 is a constant find the time T at which the motion starts?
20
Oct
A body of mass M is resting on a rough horizontal plane surface the coefficient of friction being equal to μ At t=0 a horizontal force F=F0t starts acting on it , where F0 is a constant find the time T at which the motion starts? A body of mass M is resting on a [...]
The system is pushed by a force F as shown in fig. All surfaces are smooth except between B and C. Friction coefficient between B and C is μ.. Minimum value of F to prevent block B from down ward slipping is:
20
Oct
The system is pushed by a force F as shown in fig. All surfaces are smooth except between B and C. Friction coefficient between B and C is μ.. Minimum value of F to prevent block B from down ward slipping is: each of mass m. The system is released from rest. If accelerations of [...]
Two block of masses M1andM2 are connected with a string passing over a pulley as shown in figure The block M1 lies on a horizontal surface friction between the block M1 and the horizontal surface is μ The system accelerates. What additional mass m should be placed on the block M1 so that the system does not accelerate ?
20
Oct
Two block of masses M1andM2 are connected with a string passing over a pulley as shown in figure The block M1 lies on a horizontal surface friction between the block M1 and the horizontal surface is μ The system accelerates. What additional mass m should be placed on the block M1 so that the system [...]
A block of mass m is placed on another block of mass M, which itself is lying on a horizontal surface. The coefficient of friction between two blocks is u1 and that between the block of mass M and the horizontal surface is u2. What is maximum horizontal force can be applied to the lower block so that the two blocks move without separation?
20
Oct
A block of mass m is placed on another block of mass M, which itself is lying on a horizontal surface. The coefficient of friction between two blocks is u1 and that between the block of mass M and the horizontal surface is u2. What is maximum horizontal force can be applied to the lower [...]