Angle of Friction

Q. 49. A disc and a solid sphere of same mass and radius roll down an inclined plane. The ratio of force of friction acting on the disc and the sphere is: 1) 7/6 2) 5/4 3) 3/2 4) 3/5

Q. 35. A sKater of mass m standing on ice throws a stone of mass M with a velocity v in horizontal direction.The distance sKater will move back(the coefficient of friction b/w ice and sKater is u)

Q. A body allowed to slide down a frictionlesstrack freely under gravity the track ends in a vertical circular shaped part of diameter D what should be the height ( minimum) from which the body must slide so that it completes the circle

Q. Block of mass 10kg is moving on inclined plane of angle 37 degree with constant velocity 10m/s the coeficcient of kinetic friction between inclined plane and block is

Q. maximum possible value of coeffician of friction .

Q. what is rigid body mechanics and is it compulsory that in it the direction of friction is same as the direction of motio

Q. A force of $30\text{N}$ is sufficient just to pull a block of mass $4\text{kg}$, horizontally over a flat rough surface. The angle of friction is

1. ${45}^{\circ }$
2. ${53}^{\circ }$
3. ${37}^{\circ }$
4. ${30}^{\circ }$