270181 A block of weight $200\mathrm{N}$ is pulled along a rough horizontal surface at constant speed by a force of $100\mathrm{N}$ acting at an angle ${30}^{\circ }$ above the horizontal. The coefficient of kinetic friction between the block and the surface is

270288 A block weighing$10\mathrm{kg}$ is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. If a force acts downward at ${60}^{\circ }$ with the horizontal, how large can it be without causing the block to move? $(g=10{\mathrm{ms}}^{-2})$

270289 A pulling force making an angle$\theta$ with the horizontal is applied on a block of weight $W$ placed on a horizontal table. If the angle of friction is $\phi$, the magnitude of the force required to move the body is equal to

270290 A block of mass$\sqrt{3}\mathrm{kg}$ is kept on a frictional surface with $\mu =\frac{1}{2\sqrt{3}}$. The minimum force to be applied as shown to move the block is

270181 A block of weight $200\mathrm{N}$ is pulled along a rough horizontal surface at constant speed by a force of $100\mathrm{N}$ acting at an angle ${30}^{\circ }$ above the horizontal. The coefficient of kinetic friction between the block and the surface is

270288 A block weighing$10\mathrm{kg}$ is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. If a force acts downward at ${60}^{\circ }$ with the horizontal, how large can it be without causing the block to move? $(g=10{\mathrm{ms}}^{-2})$

270289 A pulling force making an angle$\theta$ with the horizontal is applied on a block of weight $W$ placed on a horizontal table. If the angle of friction is $\phi$, the magnitude of the force required to move the body is equal to

270290 A block of mass$\sqrt{3}\mathrm{kg}$ is kept on a frictional surface with $\mu =\frac{1}{2\sqrt{3}}$. The minimum force to be applied as shown to move the block is

270346 A block of weight$100\mathrm{N}$ is lying on a rough horizontal surface. If coefficient of friction $\frac{1}{\sqrt{3}}$. The least possible force that can move the block is

270181 A block of weight $200\mathrm{N}$ is pulled along a rough horizontal surface at constant speed by a force of $100\mathrm{N}$ acting at an angle ${30}^{\circ }$ above the horizontal. The coefficient of kinetic friction between the block and the surface is

270288 A block weighing$10\mathrm{kg}$ is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. If a force acts downward at ${60}^{\circ }$ with the horizontal, how large can it be without causing the block to move? $(g=10{\mathrm{ms}}^{-2})$

270289 A pulling force making an angle$\theta$ with the horizontal is applied on a block of weight $W$ placed on a horizontal table. If the angle of friction is $\phi$, the magnitude of the force required to move the body is equal to

270290 A block of mass$\sqrt{3}\mathrm{kg}$ is kept on a frictional surface with $\mu =\frac{1}{2\sqrt{3}}$. The minimum force to be applied as shown to move the block is

270346 A block of weight$100\mathrm{N}$ is lying on a rough horizontal surface. If coefficient of friction $\frac{1}{\sqrt{3}}$. The least possible force that can move the block is

270181 A block of weight $200\mathrm{N}$ is pulled along a rough horizontal surface at constant speed by a force of $100\mathrm{N}$ acting at an angle ${30}^{\circ }$ above the horizontal. The coefficient of kinetic friction between the block and the surface is

270288 A block weighing$10\mathrm{kg}$ is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. If a force acts downward at ${60}^{\circ }$ with the horizontal, how large can it be without causing the block to move? $(g=10{\mathrm{ms}}^{-2})$

270289 A pulling force making an angle$\theta$ with the horizontal is applied on a block of weight $W$ placed on a horizontal table. If the angle of friction is $\phi$, the magnitude of the force required to move the body is equal to

270290 A block of mass$\sqrt{3}\mathrm{kg}$ is kept on a frictional surface with $\mu =\frac{1}{2\sqrt{3}}$. The minimum force to be applied as shown to move the block is

270346 A block of weight$100\mathrm{N}$ is lying on a rough horizontal surface. If coefficient of friction $\frac{1}{\sqrt{3}}$. The least possible force that can move the block is

270181 A block of weight $200\mathrm{N}$ is pulled along a rough horizontal surface at constant speed by a force of $100\mathrm{N}$ acting at an angle ${30}^{\circ }$ above the horizontal. The coefficient of kinetic friction between the block and the surface is

270288 A block weighing$10\mathrm{kg}$ is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. If a force acts downward at ${60}^{\circ }$ with the horizontal, how large can it be without causing the block to move? $(g=10{\mathrm{ms}}^{-2})$

270289 A pulling force making an angle$\theta$ with the horizontal is applied on a block of weight $W$ placed on a horizontal table. If the angle of friction is $\phi$, the magnitude of the force required to move the body is equal to

270290 A block of mass$\sqrt{3}\mathrm{kg}$ is kept on a frictional surface with $\mu =\frac{1}{2\sqrt{3}}$. The minimum force to be applied as shown to move the block is

270346 A block of weight$100\mathrm{N}$ is lying on a rough horizontal surface. If coefficient of friction $\frac{1}{\sqrt{3}}$. The least possible force that can move the block is